diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java
index 692b98942..eaf75e328 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/ParticipantsClient.java
@@ -801,6 +801,7 @@ public final AnalyzeContentResponse analyzeContent(String participant, TextInput
    *           .setReplyAudioConfig(OutputAudioConfig.newBuilder().build())
    *           .setQueryParams(QueryParameters.newBuilder().build())
    *           .setAssistQueryParams(AssistQueryParameters.newBuilder().build())
+   *           .setCxParameters(Struct.newBuilder().build())
    *           .setRequestId("requestId693933066")
    *           .build();
    *   AnalyzeContentResponse response = participantsClient.analyzeContent(request);
@@ -837,6 +838,7 @@ public final AnalyzeContentResponse analyzeContent(AnalyzeContentRequest request
    *           .setReplyAudioConfig(OutputAudioConfig.newBuilder().build())
    *           .setQueryParams(QueryParameters.newBuilder().build())
    *           .setAssistQueryParams(AssistQueryParameters.newBuilder().build())
+   *           .setCxParameters(Struct.newBuilder().build())
    *           .setRequestId("requestId693933066")
    *           .build();
    *   ApiFuture<AnalyzeContentResponse> future =
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java
index 36e8c5aef..8f11cdd6e 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/FulfillmentsClient.java
@@ -161,9 +161,9 @@ public FulfillmentsStub getStub() {
    * }
    * }</pre>
    *
-   * @param name Required. The name of the fulfillment. Supported formats: - `projects/&lt;Project
-   *     ID&gt;/agent/fulfillment` - `projects/&lt;Project ID&gt;/locations/&lt;Location
-   *     ID&gt;/agent/fulfillment`
+   * @param name Required. The name of the fulfillment. Supported formats:
+   *     <p>- `projects/&lt;Project ID&gt;/agent/fulfillment` - `projects/&lt;Project
+   *     ID&gt;/locations/&lt;Location ID&gt;/agent/fulfillment`
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final Fulfillment getFulfillment(FulfillmentName name) {
@@ -187,9 +187,9 @@ public final Fulfillment getFulfillment(FulfillmentName name) {
    * }
    * }</pre>
    *
-   * @param name Required. The name of the fulfillment. Supported formats: - `projects/&lt;Project
-   *     ID&gt;/agent/fulfillment` - `projects/&lt;Project ID&gt;/locations/&lt;Location
-   *     ID&gt;/agent/fulfillment`
+   * @param name Required. The name of the fulfillment. Supported formats:
+   *     <p>- `projects/&lt;Project ID&gt;/agent/fulfillment` - `projects/&lt;Project
+   *     ID&gt;/locations/&lt;Location ID&gt;/agent/fulfillment`
    * @throws com.google.api.gax.rpc.ApiException if the remote call fails
    */
   public final Fulfillment getFulfillment(String name) {
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java
index de0fffac8..1671a952b 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClient.java
@@ -23,6 +23,7 @@
 import com.google.api.gax.paging.AbstractFixedSizeCollection;
 import com.google.api.gax.paging.AbstractPage;
 import com.google.api.gax.paging.AbstractPagedListResponse;
+import com.google.api.gax.rpc.BidiStreamingCallable;
 import com.google.api.gax.rpc.PageContext;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.dialogflow.v2beta1.stub.ParticipantsStub;
@@ -803,6 +804,7 @@ public final AnalyzeContentResponse analyzeContent(String participant, TextInput
    *           .setReplyAudioConfig(OutputAudioConfig.newBuilder().build())
    *           .setQueryParams(QueryParameters.newBuilder().build())
    *           .setAssistQueryParams(AssistQueryParameters.newBuilder().build())
+   *           .setCxParameters(Struct.newBuilder().build())
    *           .setMessageSendTime(Timestamp.newBuilder().build())
    *           .setRequestId("requestId693933066")
    *           .build();
@@ -840,6 +842,7 @@ public final AnalyzeContentResponse analyzeContent(AnalyzeContentRequest request
    *           .setReplyAudioConfig(OutputAudioConfig.newBuilder().build())
    *           .setQueryParams(QueryParameters.newBuilder().build())
    *           .setAssistQueryParams(AssistQueryParameters.newBuilder().build())
+   *           .setCxParameters(Struct.newBuilder().build())
    *           .setMessageSendTime(Timestamp.newBuilder().build())
    *           .setRequestId("requestId693933066")
    *           .build();
@@ -855,6 +858,53 @@ public final AnalyzeContentResponse analyzeContent(AnalyzeContentRequest request
     return stub.analyzeContentCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Adds a text (e.g., chat) or audio (e.g., phone recording) message from a participant into the
+   * conversation. Note: This method is only available through the gRPC API (not REST).
+   *
+   * <p>The top-level message sent to the client by the server is `StreamingAnalyzeContentResponse`.
+   * Multiple response messages can be returned in order. The first one or more messages contain the
+   * `recognition_result` field. Each result represents a more complete transcript of what the user
+   * said. The next message contains the `reply_text` field, and potentially the `reply_audio`
+   * and/or the `automated_agent_reply` fields.
+   *
+   * <p>Note: Always use agent versions for production traffic sent to virtual agents. See [Versions
+   * and environments](https://cloud.google.com/dialogflow/es/docs/agents-versions).
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated for illustrative purposes only.
+   * // It may require modifications to work in your environment.
+   * try (ParticipantsClient participantsClient = ParticipantsClient.create()) {
+   *   BidiStream<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse> bidiStream =
+   *       participantsClient.streamingAnalyzeContentCallable().call();
+   *   StreamingAnalyzeContentRequest request =
+   *       StreamingAnalyzeContentRequest.newBuilder()
+   *           .setParticipant(
+   *               ParticipantName.ofProjectConversationParticipantName(
+   *                       "[PROJECT]", "[CONVERSATION]", "[PARTICIPANT]")
+   *                   .toString())
+   *           .setReplyAudioConfig(OutputAudioConfig.newBuilder().build())
+   *           .setQueryParams(QueryParameters.newBuilder().build())
+   *           .setAssistQueryParams(AssistQueryParameters.newBuilder().build())
+   *           .setCxParameters(Struct.newBuilder().build())
+   *           .setEnablePartialAutomatedAgentReply(true)
+   *           .build();
+   *   bidiStream.send(request);
+   *   for (StreamingAnalyzeContentResponse response : bidiStream) {
+   *     // Do something when a response is received.
+   *   }
+   * }
+   * }</pre>
+   */
+  public final BidiStreamingCallable<
+          StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentCallable() {
+    return stub.streamingAnalyzeContentCallable();
+  }
+
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Gets suggested articles for a participant based on specific historical messages.
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java
index aab94b0f3..ecae1a3f9 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsSettings.java
@@ -28,6 +28,7 @@
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.ClientSettings;
 import com.google.api.gax.rpc.PagedCallSettings;
+import com.google.api.gax.rpc.StreamingCallSettings;
 import com.google.api.gax.rpc.TransportChannelProvider;
 import com.google.api.gax.rpc.UnaryCallSettings;
 import com.google.cloud.dialogflow.v2beta1.stub.ParticipantsStubSettings;
@@ -99,6 +100,12 @@ public UnaryCallSettings<AnalyzeContentRequest, AnalyzeContentResponse> analyzeC
     return ((ParticipantsStubSettings) getStubSettings()).analyzeContentSettings();
   }
 
+  /** Returns the object with the settings used for calls to streamingAnalyzeContent. */
+  public StreamingCallSettings<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentSettings() {
+    return ((ParticipantsStubSettings) getStubSettings()).streamingAnalyzeContentSettings();
+  }
+
   /** Returns the object with the settings used for calls to suggestArticles. */
   public UnaryCallSettings<SuggestArticlesRequest, SuggestArticlesResponse>
       suggestArticlesSettings() {
@@ -267,6 +274,13 @@ public UnaryCallSettings.Builder<GetParticipantRequest, Participant> getParticip
       return getStubSettingsBuilder().analyzeContentSettings();
     }
 
+    /** Returns the builder for the settings used for calls to streamingAnalyzeContent. */
+    public StreamingCallSettings.Builder<
+            StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+        streamingAnalyzeContentSettings() {
+      return getStubSettingsBuilder().streamingAnalyzeContentSettings();
+    }
+
     /** Returns the builder for the settings used for calls to suggestArticles. */
     public UnaryCallSettings.Builder<SuggestArticlesRequest, SuggestArticlesResponse>
         suggestArticlesSettings() {
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/gapic_metadata.json b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/gapic_metadata.json
index 8576432bb..c195a263e 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/gapic_metadata.json
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/gapic_metadata.json
@@ -331,6 +331,9 @@
             "ListSuggestions": {
               "methods": ["listSuggestions", "listSuggestionsPagedCallable", "listSuggestionsCallable"]
             },
+            "StreamingAnalyzeContent": {
+              "methods": ["streamingAnalyzeContentCallable"]
+            },
             "SuggestArticles": {
               "methods": ["suggestArticles", "suggestArticles", "suggestArticles", "suggestArticlesCallable"]
             },
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java
index e3ea43074..6df770594 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/GrpcParticipantsStub.java
@@ -24,6 +24,7 @@
 import com.google.api.gax.core.BackgroundResourceAggregation;
 import com.google.api.gax.grpc.GrpcCallSettings;
 import com.google.api.gax.grpc.GrpcStubCallableFactory;
+import com.google.api.gax.rpc.BidiStreamingCallable;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.dialogflow.v2beta1.AnalyzeContentRequest;
@@ -37,6 +38,8 @@
 import com.google.cloud.dialogflow.v2beta1.ListSuggestionsRequest;
 import com.google.cloud.dialogflow.v2beta1.ListSuggestionsResponse;
 import com.google.cloud.dialogflow.v2beta1.Participant;
+import com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest;
+import com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse;
 import com.google.cloud.dialogflow.v2beta1.SuggestArticlesRequest;
 import com.google.cloud.dialogflow.v2beta1.SuggestArticlesResponse;
 import com.google.cloud.dialogflow.v2beta1.SuggestFaqAnswersRequest;
@@ -113,6 +116,20 @@ public class GrpcParticipantsStub extends ParticipantsStub {
                   ProtoUtils.marshaller(AnalyzeContentResponse.getDefaultInstance()))
               .build();
 
+  private static final MethodDescriptor<
+          StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentMethodDescriptor =
+          MethodDescriptor
+              .<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.BIDI_STREAMING)
+              .setFullMethodName(
+                  "google.cloud.dialogflow.v2beta1.Participants/StreamingAnalyzeContent")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(StreamingAnalyzeContentRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(StreamingAnalyzeContentResponse.getDefaultInstance()))
+              .build();
+
   private static final MethodDescriptor<SuggestArticlesRequest, SuggestArticlesResponse>
       suggestArticlesMethodDescriptor =
           MethodDescriptor.<SuggestArticlesRequest, SuggestArticlesResponse>newBuilder()
@@ -176,6 +193,9 @@ public class GrpcParticipantsStub extends ParticipantsStub {
       listParticipantsPagedCallable;
   private final UnaryCallable<UpdateParticipantRequest, Participant> updateParticipantCallable;
   private final UnaryCallable<AnalyzeContentRequest, AnalyzeContentResponse> analyzeContentCallable;
+  private final BidiStreamingCallable<
+          StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentCallable;
   private final UnaryCallable<SuggestArticlesRequest, SuggestArticlesResponse>
       suggestArticlesCallable;
   private final UnaryCallable<SuggestFaqAnswersRequest, SuggestFaqAnswersResponse>
@@ -284,6 +304,12 @@ protected GrpcParticipantsStub(
                       return params.build();
                     })
                 .build();
+    GrpcCallSettings<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+        streamingAnalyzeContentTransportSettings =
+            GrpcCallSettings
+                .<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>newBuilder()
+                .setMethodDescriptor(streamingAnalyzeContentMethodDescriptor)
+                .build();
     GrpcCallSettings<SuggestArticlesRequest, SuggestArticlesResponse>
         suggestArticlesTransportSettings =
             GrpcCallSettings.<SuggestArticlesRequest, SuggestArticlesResponse>newBuilder()
@@ -362,6 +388,11 @@ protected GrpcParticipantsStub(
     this.analyzeContentCallable =
         callableFactory.createUnaryCallable(
             analyzeContentTransportSettings, settings.analyzeContentSettings(), clientContext);
+    this.streamingAnalyzeContentCallable =
+        callableFactory.createBidiStreamingCallable(
+            streamingAnalyzeContentTransportSettings,
+            settings.streamingAnalyzeContentSettings(),
+            clientContext);
     this.suggestArticlesCallable =
         callableFactory.createUnaryCallable(
             suggestArticlesTransportSettings, settings.suggestArticlesSettings(), clientContext);
@@ -427,6 +458,12 @@ public UnaryCallable<AnalyzeContentRequest, AnalyzeContentResponse> analyzeConte
     return analyzeContentCallable;
   }
 
+  @Override
+  public BidiStreamingCallable<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentCallable() {
+    return streamingAnalyzeContentCallable;
+  }
+
   @Override
   public UnaryCallable<SuggestArticlesRequest, SuggestArticlesResponse> suggestArticlesCallable() {
     return suggestArticlesCallable;
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java
index 060846efb..87ea2727c 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStub.java
@@ -21,6 +21,7 @@
 
 import com.google.api.core.BetaApi;
 import com.google.api.gax.core.BackgroundResource;
+import com.google.api.gax.rpc.BidiStreamingCallable;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.dialogflow.v2beta1.AnalyzeContentRequest;
 import com.google.cloud.dialogflow.v2beta1.AnalyzeContentResponse;
@@ -33,6 +34,8 @@
 import com.google.cloud.dialogflow.v2beta1.ListSuggestionsRequest;
 import com.google.cloud.dialogflow.v2beta1.ListSuggestionsResponse;
 import com.google.cloud.dialogflow.v2beta1.Participant;
+import com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest;
+import com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse;
 import com.google.cloud.dialogflow.v2beta1.SuggestArticlesRequest;
 import com.google.cloud.dialogflow.v2beta1.SuggestArticlesResponse;
 import com.google.cloud.dialogflow.v2beta1.SuggestFaqAnswersRequest;
@@ -78,6 +81,11 @@ public UnaryCallable<AnalyzeContentRequest, AnalyzeContentResponse> analyzeConte
     throw new UnsupportedOperationException("Not implemented: analyzeContentCallable()");
   }
 
+  public BidiStreamingCallable<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentCallable() {
+    throw new UnsupportedOperationException("Not implemented: streamingAnalyzeContentCallable()");
+  }
+
   public UnaryCallable<SuggestArticlesRequest, SuggestArticlesResponse> suggestArticlesCallable() {
     throw new UnsupportedOperationException("Not implemented: suggestArticlesCallable()");
   }
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java
index 9584c09c0..5a0e7b1ae 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2beta1/stub/ParticipantsStubSettings.java
@@ -37,6 +37,7 @@
 import com.google.api.gax.rpc.PagedListDescriptor;
 import com.google.api.gax.rpc.PagedListResponseFactory;
 import com.google.api.gax.rpc.StatusCode;
+import com.google.api.gax.rpc.StreamingCallSettings;
 import com.google.api.gax.rpc.StubSettings;
 import com.google.api.gax.rpc.TransportChannelProvider;
 import com.google.api.gax.rpc.UnaryCallSettings;
@@ -52,6 +53,8 @@
 import com.google.cloud.dialogflow.v2beta1.ListSuggestionsRequest;
 import com.google.cloud.dialogflow.v2beta1.ListSuggestionsResponse;
 import com.google.cloud.dialogflow.v2beta1.Participant;
+import com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest;
+import com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse;
 import com.google.cloud.dialogflow.v2beta1.SuggestArticlesRequest;
 import com.google.cloud.dialogflow.v2beta1.SuggestArticlesResponse;
 import com.google.cloud.dialogflow.v2beta1.SuggestFaqAnswersRequest;
@@ -121,6 +124,9 @@ public class ParticipantsStubSettings extends StubSettings<ParticipantsStubSetti
   private final UnaryCallSettings<UpdateParticipantRequest, Participant> updateParticipantSettings;
   private final UnaryCallSettings<AnalyzeContentRequest, AnalyzeContentResponse>
       analyzeContentSettings;
+  private final StreamingCallSettings<
+          StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentSettings;
   private final UnaryCallSettings<SuggestArticlesRequest, SuggestArticlesResponse>
       suggestArticlesSettings;
   private final UnaryCallSettings<SuggestFaqAnswersRequest, SuggestFaqAnswersResponse>
@@ -275,6 +281,12 @@ public UnaryCallSettings<AnalyzeContentRequest, AnalyzeContentResponse> analyzeC
     return analyzeContentSettings;
   }
 
+  /** Returns the object with the settings used for calls to streamingAnalyzeContent. */
+  public StreamingCallSettings<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+      streamingAnalyzeContentSettings() {
+    return streamingAnalyzeContentSettings;
+  }
+
   /** Returns the object with the settings used for calls to suggestArticles. */
   public UnaryCallSettings<SuggestArticlesRequest, SuggestArticlesResponse>
       suggestArticlesSettings() {
@@ -397,6 +409,7 @@ protected ParticipantsStubSettings(Builder settingsBuilder) throws IOException {
     listParticipantsSettings = settingsBuilder.listParticipantsSettings().build();
     updateParticipantSettings = settingsBuilder.updateParticipantSettings().build();
     analyzeContentSettings = settingsBuilder.analyzeContentSettings().build();
+    streamingAnalyzeContentSettings = settingsBuilder.streamingAnalyzeContentSettings().build();
     suggestArticlesSettings = settingsBuilder.suggestArticlesSettings().build();
     suggestFaqAnswersSettings = settingsBuilder.suggestFaqAnswersSettings().build();
     suggestSmartRepliesSettings = settingsBuilder.suggestSmartRepliesSettings().build();
@@ -418,6 +431,9 @@ public static class Builder extends StubSettings.Builder<ParticipantsStubSetting
         updateParticipantSettings;
     private final UnaryCallSettings.Builder<AnalyzeContentRequest, AnalyzeContentResponse>
         analyzeContentSettings;
+    private final StreamingCallSettings.Builder<
+            StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+        streamingAnalyzeContentSettings;
     private final UnaryCallSettings.Builder<SuggestArticlesRequest, SuggestArticlesResponse>
         suggestArticlesSettings;
     private final UnaryCallSettings.Builder<SuggestFaqAnswersRequest, SuggestFaqAnswersResponse>
@@ -441,6 +457,8 @@ public static class Builder extends StubSettings.Builder<ParticipantsStubSetting
       definitions.put(
           "retry_policy_2_codes",
           ImmutableSet.copyOf(Lists.<StatusCode.Code>newArrayList(StatusCode.Code.UNAVAILABLE)));
+      definitions.put(
+          "no_retry_3_codes", ImmutableSet.copyOf(Lists.<StatusCode.Code>newArrayList()));
       RETRYABLE_CODE_DEFINITIONS = definitions.build();
     }
 
@@ -471,6 +489,14 @@ public static class Builder extends StubSettings.Builder<ParticipantsStubSetting
               .setTotalTimeout(Duration.ofMillis(220000L))
               .build();
       definitions.put("retry_policy_2_params", settings);
+      settings =
+          RetrySettings.newBuilder()
+              .setInitialRpcTimeout(Duration.ofMillis(220000L))
+              .setRpcTimeoutMultiplier(1.0)
+              .setMaxRpcTimeout(Duration.ofMillis(220000L))
+              .setTotalTimeout(Duration.ofMillis(220000L))
+              .build();
+      definitions.put("no_retry_3_params", settings);
       RETRY_PARAM_DEFINITIONS = definitions.build();
     }
 
@@ -486,6 +512,7 @@ protected Builder(ClientContext clientContext) {
       listParticipantsSettings = PagedCallSettings.newBuilder(LIST_PARTICIPANTS_PAGE_STR_FACT);
       updateParticipantSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       analyzeContentSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      streamingAnalyzeContentSettings = StreamingCallSettings.newBuilder();
       suggestArticlesSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       suggestFaqAnswersSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       suggestSmartRepliesSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
@@ -515,6 +542,7 @@ protected Builder(ParticipantsStubSettings settings) {
       listParticipantsSettings = settings.listParticipantsSettings.toBuilder();
       updateParticipantSettings = settings.updateParticipantSettings.toBuilder();
       analyzeContentSettings = settings.analyzeContentSettings.toBuilder();
+      streamingAnalyzeContentSettings = settings.streamingAnalyzeContentSettings.toBuilder();
       suggestArticlesSettings = settings.suggestArticlesSettings.toBuilder();
       suggestFaqAnswersSettings = settings.suggestFaqAnswersSettings.toBuilder();
       suggestSmartRepliesSettings = settings.suggestSmartRepliesSettings.toBuilder();
@@ -647,6 +675,13 @@ public UnaryCallSettings.Builder<GetParticipantRequest, Participant> getParticip
       return analyzeContentSettings;
     }
 
+    /** Returns the builder for the settings used for calls to streamingAnalyzeContent. */
+    public StreamingCallSettings.Builder<
+            StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+        streamingAnalyzeContentSettings() {
+      return streamingAnalyzeContentSettings;
+    }
+
     /** Returns the builder for the settings used for calls to suggestArticles. */
     public UnaryCallSettings.Builder<SuggestArticlesRequest, SuggestArticlesResponse>
         suggestArticlesSettings() {
diff --git a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/MockParticipantsImpl.java b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/MockParticipantsImpl.java
index ae9472156..05fd36b40 100644
--- a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/MockParticipantsImpl.java
+++ b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/MockParticipantsImpl.java
@@ -163,6 +163,43 @@ public void analyzeContent(
     }
   }
 
+  @Override
+  public StreamObserver<StreamingAnalyzeContentRequest> streamingAnalyzeContent(
+      final StreamObserver<StreamingAnalyzeContentResponse> responseObserver) {
+    StreamObserver<StreamingAnalyzeContentRequest> requestObserver =
+        new StreamObserver<StreamingAnalyzeContentRequest>() {
+          @Override
+          public void onNext(StreamingAnalyzeContentRequest value) {
+            requests.add(value);
+            final Object response = responses.remove();
+            if (response instanceof StreamingAnalyzeContentResponse) {
+              responseObserver.onNext(((StreamingAnalyzeContentResponse) response));
+            } else if (response instanceof Exception) {
+              responseObserver.onError(((Exception) response));
+            } else {
+              responseObserver.onError(
+                  new IllegalArgumentException(
+                      String.format(
+                          "Unrecognized response type %s for method StreamingAnalyzeContent, expected %s or %s",
+                          response == null ? "null" : response.getClass().getName(),
+                          StreamingAnalyzeContentResponse.class.getName(),
+                          Exception.class.getName())));
+            }
+          }
+
+          @Override
+          public void onError(Throwable t) {
+            responseObserver.onError(t);
+          }
+
+          @Override
+          public void onCompleted() {
+            responseObserver.onCompleted();
+          }
+        };
+    return requestObserver;
+  }
+
   @Override
   public void suggestArticles(
       SuggestArticlesRequest request, StreamObserver<SuggestArticlesResponse> responseObserver) {
diff --git a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClientTest.java b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClientTest.java
index 88560391d..45fdbba0c 100644
--- a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClientTest.java
+++ b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2beta1/ParticipantsClientTest.java
@@ -24,11 +24,16 @@
 import com.google.api.gax.grpc.testing.LocalChannelProvider;
 import com.google.api.gax.grpc.testing.MockGrpcService;
 import com.google.api.gax.grpc.testing.MockServiceHelper;
+import com.google.api.gax.grpc.testing.MockStreamObserver;
 import com.google.api.gax.rpc.ApiClientHeaderProvider;
+import com.google.api.gax.rpc.ApiStreamObserver;
+import com.google.api.gax.rpc.BidiStreamingCallable;
 import com.google.api.gax.rpc.InvalidArgumentException;
+import com.google.api.gax.rpc.StatusCode;
 import com.google.common.collect.Lists;
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.FieldMask;
+import com.google.protobuf.Struct;
 import io.grpc.StatusRuntimeException;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -36,6 +41,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.UUID;
+import java.util.concurrent.ExecutionException;
 import javax.annotation.Generated;
 import org.junit.After;
 import org.junit.AfterClass;
@@ -598,6 +604,86 @@ public void analyzeContentExceptionTest4() throws Exception {
     }
   }
 
+  @Test
+  public void streamingAnalyzeContentTest() throws Exception {
+    StreamingAnalyzeContentResponse expectedResponse =
+        StreamingAnalyzeContentResponse.newBuilder()
+            .setRecognitionResult(StreamingRecognitionResult.newBuilder().build())
+            .setReplyText("replyText-433699017")
+            .setReplyAudio(OutputAudio.newBuilder().build())
+            .setAutomatedAgentReply(AutomatedAgentReply.newBuilder().build())
+            .setMessage(Message.newBuilder().build())
+            .addAllHumanAgentSuggestionResults(new ArrayList<SuggestionResult>())
+            .addAllEndUserSuggestionResults(new ArrayList<SuggestionResult>())
+            .setDtmfParameters(DtmfParameters.newBuilder().build())
+            .build();
+    mockParticipants.addResponse(expectedResponse);
+    StreamingAnalyzeContentRequest request =
+        StreamingAnalyzeContentRequest.newBuilder()
+            .setParticipant(
+                ParticipantName.ofProjectConversationParticipantName(
+                        "[PROJECT]", "[CONVERSATION]", "[PARTICIPANT]")
+                    .toString())
+            .setReplyAudioConfig(OutputAudioConfig.newBuilder().build())
+            .setQueryParams(QueryParameters.newBuilder().build())
+            .setAssistQueryParams(AssistQueryParameters.newBuilder().build())
+            .setCxParameters(Struct.newBuilder().build())
+            .setEnablePartialAutomatedAgentReply(true)
+            .build();
+
+    MockStreamObserver<StreamingAnalyzeContentResponse> responseObserver =
+        new MockStreamObserver<>();
+
+    BidiStreamingCallable<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+        callable = client.streamingAnalyzeContentCallable();
+    ApiStreamObserver<StreamingAnalyzeContentRequest> requestObserver =
+        callable.bidiStreamingCall(responseObserver);
+
+    requestObserver.onNext(request);
+    requestObserver.onCompleted();
+
+    List<StreamingAnalyzeContentResponse> actualResponses = responseObserver.future().get();
+    Assert.assertEquals(1, actualResponses.size());
+    Assert.assertEquals(expectedResponse, actualResponses.get(0));
+  }
+
+  @Test
+  public void streamingAnalyzeContentExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockParticipants.addException(exception);
+    StreamingAnalyzeContentRequest request =
+        StreamingAnalyzeContentRequest.newBuilder()
+            .setParticipant(
+                ParticipantName.ofProjectConversationParticipantName(
+                        "[PROJECT]", "[CONVERSATION]", "[PARTICIPANT]")
+                    .toString())
+            .setReplyAudioConfig(OutputAudioConfig.newBuilder().build())
+            .setQueryParams(QueryParameters.newBuilder().build())
+            .setAssistQueryParams(AssistQueryParameters.newBuilder().build())
+            .setCxParameters(Struct.newBuilder().build())
+            .setEnablePartialAutomatedAgentReply(true)
+            .build();
+
+    MockStreamObserver<StreamingAnalyzeContentResponse> responseObserver =
+        new MockStreamObserver<>();
+
+    BidiStreamingCallable<StreamingAnalyzeContentRequest, StreamingAnalyzeContentResponse>
+        callable = client.streamingAnalyzeContentCallable();
+    ApiStreamObserver<StreamingAnalyzeContentRequest> requestObserver =
+        callable.bidiStreamingCall(responseObserver);
+
+    requestObserver.onNext(request);
+
+    try {
+      List<StreamingAnalyzeContentResponse> actualResponses = responseObserver.future().get();
+      Assert.fail("No exception thrown");
+    } catch (ExecutionException e) {
+      Assert.assertTrue(e.getCause() instanceof InvalidArgumentException);
+      InvalidArgumentException apiException = ((InvalidArgumentException) e.getCause());
+      Assert.assertEquals(StatusCode.Code.INVALID_ARGUMENT, apiException.getStatusCode().getCode());
+    }
+  }
+
   @Test
   public void suggestArticlesTest() throws Exception {
     SuggestArticlesResponse expectedResponse =
diff --git a/grpc-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsGrpc.java b/grpc-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsGrpc.java
index b85b3bb9a..66005f5dd 100644
--- a/grpc-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsGrpc.java
+++ b/grpc-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantsGrpc.java
@@ -267,6 +267,56 @@ private ParticipantsGrpc() {}
     return getAnalyzeContentMethod;
   }
 
+  private static volatile io.grpc.MethodDescriptor<
+          com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest,
+          com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>
+      getStreamingAnalyzeContentMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "StreamingAnalyzeContent",
+      requestType = com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.class,
+      responseType = com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING)
+  public static io.grpc.MethodDescriptor<
+          com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest,
+          com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>
+      getStreamingAnalyzeContentMethod() {
+    io.grpc.MethodDescriptor<
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest,
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>
+        getStreamingAnalyzeContentMethod;
+    if ((getStreamingAnalyzeContentMethod = ParticipantsGrpc.getStreamingAnalyzeContentMethod)
+        == null) {
+      synchronized (ParticipantsGrpc.class) {
+        if ((getStreamingAnalyzeContentMethod = ParticipantsGrpc.getStreamingAnalyzeContentMethod)
+            == null) {
+          ParticipantsGrpc.getStreamingAnalyzeContentMethod =
+              getStreamingAnalyzeContentMethod =
+                  io.grpc.MethodDescriptor
+                      .<com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest,
+                          com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>
+                          newBuilder()
+                      .setType(io.grpc.MethodDescriptor.MethodType.BIDI_STREAMING)
+                      .setFullMethodName(
+                          generateFullMethodName(SERVICE_NAME, "StreamingAnalyzeContent"))
+                      .setSampledToLocalTracing(true)
+                      .setRequestMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+                                  .getDefaultInstance()))
+                      .setResponseMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+                                  .getDefaultInstance()))
+                      .setSchemaDescriptor(
+                          new ParticipantsMethodDescriptorSupplier("StreamingAnalyzeContent"))
+                      .build();
+        }
+      }
+    }
+    return getStreamingAnalyzeContentMethod;
+  }
+
   private static volatile io.grpc.MethodDescriptor<
           com.google.cloud.dialogflow.v2beta1.SuggestArticlesRequest,
           com.google.cloud.dialogflow.v2beta1.SuggestArticlesResponse>
@@ -633,6 +683,35 @@ public void analyzeContent(
           getAnalyzeContentMethod(), responseObserver);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Adds a text (e.g., chat) or audio (e.g., phone recording) message from a
+     * participant into the conversation.
+     * Note: This method is only available through the gRPC API (not REST).
+     * The top-level message sent to the client by the server is
+     * `StreamingAnalyzeContentResponse`. Multiple response messages can be
+     * returned in order. The first one or more messages contain the
+     * `recognition_result` field. Each result represents a more complete
+     * transcript of what the user said. The next message contains the
+     * `reply_text` field, and potentially the `reply_audio` and/or the
+     * `automated_agent_reply` fields.
+     * Note: Always use agent versions for production traffic
+     * sent to virtual agents. See [Versions and
+     * environments](https://cloud.google.com/dialogflow/es/docs/agents-versions).
+     * </pre>
+     */
+    public io.grpc.stub.StreamObserver<
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest>
+        streamingAnalyzeContent(
+            io.grpc.stub.StreamObserver<
+                    com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>
+                responseObserver) {
+      return io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall(
+          getStreamingAnalyzeContentMethod(), responseObserver);
+    }
+
     /**
      *
      *
@@ -776,6 +855,13 @@ public final io.grpc.ServerServiceDefinition bindService() {
                       com.google.cloud.dialogflow.v2beta1.AnalyzeContentRequest,
                       com.google.cloud.dialogflow.v2beta1.AnalyzeContentResponse>(
                       this, METHODID_ANALYZE_CONTENT)))
+          .addMethod(
+              getStreamingAnalyzeContentMethod(),
+              io.grpc.stub.ServerCalls.asyncBidiStreamingCall(
+                  new MethodHandlers<
+                      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest,
+                      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>(
+                      this, METHODID_STREAMING_ANALYZE_CONTENT)))
           .addMethod(
               getSuggestArticlesMethod(),
               io.grpc.stub.ServerCalls.asyncUnaryCall(
@@ -922,6 +1008,36 @@ public void analyzeContent(
           responseObserver);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Adds a text (e.g., chat) or audio (e.g., phone recording) message from a
+     * participant into the conversation.
+     * Note: This method is only available through the gRPC API (not REST).
+     * The top-level message sent to the client by the server is
+     * `StreamingAnalyzeContentResponse`. Multiple response messages can be
+     * returned in order. The first one or more messages contain the
+     * `recognition_result` field. Each result represents a more complete
+     * transcript of what the user said. The next message contains the
+     * `reply_text` field, and potentially the `reply_audio` and/or the
+     * `automated_agent_reply` fields.
+     * Note: Always use agent versions for production traffic
+     * sent to virtual agents. See [Versions and
+     * environments](https://cloud.google.com/dialogflow/es/docs/agents-versions).
+     * </pre>
+     */
+    public io.grpc.stub.StreamObserver<
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest>
+        streamingAnalyzeContent(
+            io.grpc.stub.StreamObserver<
+                    com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>
+                responseObserver) {
+      return io.grpc.stub.ClientCalls.asyncBidiStreamingCall(
+          getChannel().newCall(getStreamingAnalyzeContentMethod(), getCallOptions()),
+          responseObserver);
+    }
+
     /**
      *
      *
@@ -1427,6 +1543,7 @@ protected ParticipantsFutureStub build(
   private static final int METHODID_SUGGEST_SMART_REPLIES = 7;
   private static final int METHODID_LIST_SUGGESTIONS = 8;
   private static final int METHODID_COMPILE_SUGGESTION = 9;
+  private static final int METHODID_STREAMING_ANALYZE_CONTENT = 10;
 
   private static final class MethodHandlers<Req, Resp>
       implements io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
@@ -1522,6 +1639,12 @@ public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserv
     public io.grpc.stub.StreamObserver<Req> invoke(
         io.grpc.stub.StreamObserver<Resp> responseObserver) {
       switch (methodId) {
+        case METHODID_STREAMING_ANALYZE_CONTENT:
+          return (io.grpc.stub.StreamObserver<Req>)
+              serviceImpl.streamingAnalyzeContent(
+                  (io.grpc.stub.StreamObserver<
+                          com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse>)
+                      responseObserver);
         default:
           throw new AssertionError();
       }
@@ -1581,6 +1704,7 @@ public static io.grpc.ServiceDescriptor getServiceDescriptor() {
                       .addMethod(getListParticipantsMethod())
                       .addMethod(getUpdateParticipantMethod())
                       .addMethod(getAnalyzeContentMethod())
+                      .addMethod(getStreamingAnalyzeContentMethod())
                       .addMethod(getSuggestArticlesMethod())
                       .addMethod(getSuggestFaqAnswersMethod())
                       .addMethod(getSuggestSmartRepliesMethod())
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequest.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequest.java
index 45a18db3c..8e0c8b7cb 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequest.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequest.java
@@ -164,6 +164,21 @@ private AnalyzeContentRequest(
                 assistQueryParams_ = subBuilder.buildPartial();
               }
 
+              break;
+            }
+          case 146:
+            {
+              com.google.protobuf.Struct.Builder subBuilder = null;
+              if (cxParameters_ != null) {
+                subBuilder = cxParameters_.toBuilder();
+              }
+              cxParameters_ =
+                  input.readMessage(com.google.protobuf.Struct.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(cxParameters_);
+                cxParameters_ = subBuilder.buildPartial();
+              }
+
               break;
             }
           default:
@@ -565,6 +580,64 @@ public com.google.cloud.dialogflow.v2.AssistQueryParameters getAssistQueryParams
     return getAssistQueryParams();
   }
 
+  public static final int CX_PARAMETERS_FIELD_NUMBER = 18;
+  private com.google.protobuf.Struct cxParameters_;
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return Whether the cxParameters field is set.
+   */
+  @java.lang.Override
+  public boolean hasCxParameters() {
+    return cxParameters_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return The cxParameters.
+   */
+  @java.lang.Override
+  public com.google.protobuf.Struct getCxParameters() {
+    return cxParameters_ == null ? com.google.protobuf.Struct.getDefaultInstance() : cxParameters_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   */
+  @java.lang.Override
+  public com.google.protobuf.StructOrBuilder getCxParametersOrBuilder() {
+    return getCxParameters();
+  }
+
   public static final int REQUEST_ID_FIELD_NUMBER = 11;
   private volatile java.lang.Object requestId_;
   /**
@@ -653,6 +726,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (assistQueryParams_ != null) {
       output.writeMessage(14, getAssistQueryParams());
     }
+    if (cxParameters_ != null) {
+      output.writeMessage(18, getCxParameters());
+    }
     unknownFields.writeTo(output);
   }
 
@@ -687,6 +763,9 @@ public int getSerializedSize() {
     if (assistQueryParams_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(14, getAssistQueryParams());
     }
+    if (cxParameters_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(18, getCxParameters());
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -716,6 +795,10 @@ public boolean equals(final java.lang.Object obj) {
     if (hasAssistQueryParams()) {
       if (!getAssistQueryParams().equals(other.getAssistQueryParams())) return false;
     }
+    if (hasCxParameters() != other.hasCxParameters()) return false;
+    if (hasCxParameters()) {
+      if (!getCxParameters().equals(other.getCxParameters())) return false;
+    }
     if (!getRequestId().equals(other.getRequestId())) return false;
     if (!getInputCase().equals(other.getInputCase())) return false;
     switch (inputCase_) {
@@ -753,6 +836,10 @@ public int hashCode() {
       hash = (37 * hash) + ASSIST_QUERY_PARAMS_FIELD_NUMBER;
       hash = (53 * hash) + getAssistQueryParams().hashCode();
     }
+    if (hasCxParameters()) {
+      hash = (37 * hash) + CX_PARAMETERS_FIELD_NUMBER;
+      hash = (53 * hash) + getCxParameters().hashCode();
+    }
     hash = (37 * hash) + REQUEST_ID_FIELD_NUMBER;
     hash = (53 * hash) + getRequestId().hashCode();
     switch (inputCase_) {
@@ -932,6 +1019,12 @@ public Builder clear() {
         assistQueryParams_ = null;
         assistQueryParamsBuilder_ = null;
       }
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = null;
+      } else {
+        cxParameters_ = null;
+        cxParametersBuilder_ = null;
+      }
       requestId_ = "";
 
       inputCase_ = 0;
@@ -993,6 +1086,11 @@ public com.google.cloud.dialogflow.v2.AnalyzeContentRequest buildPartial() {
       } else {
         result.assistQueryParams_ = assistQueryParamsBuilder_.build();
       }
+      if (cxParametersBuilder_ == null) {
+        result.cxParameters_ = cxParameters_;
+      } else {
+        result.cxParameters_ = cxParametersBuilder_.build();
+      }
       result.requestId_ = requestId_;
       result.inputCase_ = inputCase_;
       onBuilt();
@@ -1058,6 +1156,9 @@ public Builder mergeFrom(com.google.cloud.dialogflow.v2.AnalyzeContentRequest ot
       if (other.hasAssistQueryParams()) {
         mergeAssistQueryParams(other.getAssistQueryParams());
       }
+      if (other.hasCxParameters()) {
+        mergeCxParameters(other.getCxParameters());
+      }
       if (!other.getRequestId().isEmpty()) {
         requestId_ = other.requestId_;
         onChanged();
@@ -2266,6 +2367,225 @@ public Builder clearAssistQueryParams() {
       return assistQueryParamsBuilder_;
     }
 
+    private com.google.protobuf.Struct cxParameters_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Struct,
+            com.google.protobuf.Struct.Builder,
+            com.google.protobuf.StructOrBuilder>
+        cxParametersBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     *
+     * @return Whether the cxParameters field is set.
+     */
+    public boolean hasCxParameters() {
+      return cxParametersBuilder_ != null || cxParameters_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     *
+     * @return The cxParameters.
+     */
+    public com.google.protobuf.Struct getCxParameters() {
+      if (cxParametersBuilder_ == null) {
+        return cxParameters_ == null
+            ? com.google.protobuf.Struct.getDefaultInstance()
+            : cxParameters_;
+      } else {
+        return cxParametersBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder setCxParameters(com.google.protobuf.Struct value) {
+      if (cxParametersBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        cxParameters_ = value;
+        onChanged();
+      } else {
+        cxParametersBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder setCxParameters(com.google.protobuf.Struct.Builder builderForValue) {
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = builderForValue.build();
+        onChanged();
+      } else {
+        cxParametersBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder mergeCxParameters(com.google.protobuf.Struct value) {
+      if (cxParametersBuilder_ == null) {
+        if (cxParameters_ != null) {
+          cxParameters_ =
+              com.google.protobuf.Struct.newBuilder(cxParameters_).mergeFrom(value).buildPartial();
+        } else {
+          cxParameters_ = value;
+        }
+        onChanged();
+      } else {
+        cxParametersBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder clearCxParameters() {
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = null;
+        onChanged();
+      } else {
+        cxParameters_ = null;
+        cxParametersBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public com.google.protobuf.Struct.Builder getCxParametersBuilder() {
+
+      onChanged();
+      return getCxParametersFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public com.google.protobuf.StructOrBuilder getCxParametersOrBuilder() {
+      if (cxParametersBuilder_ != null) {
+        return cxParametersBuilder_.getMessageOrBuilder();
+      } else {
+        return cxParameters_ == null
+            ? com.google.protobuf.Struct.getDefaultInstance()
+            : cxParameters_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Struct,
+            com.google.protobuf.Struct.Builder,
+            com.google.protobuf.StructOrBuilder>
+        getCxParametersFieldBuilder() {
+      if (cxParametersBuilder_ == null) {
+        cxParametersBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.protobuf.Struct,
+                com.google.protobuf.Struct.Builder,
+                com.google.protobuf.StructOrBuilder>(
+                getCxParameters(), getParentForChildren(), isClean());
+        cxParameters_ = null;
+      }
+      return cxParametersBuilder_;
+    }
+
     private java.lang.Object requestId_ = "";
     /**
      *
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequestOrBuilder.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequestOrBuilder.java
index 4054b595e..c28fe0e3b 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequestOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/AnalyzeContentRequestOrBuilder.java
@@ -243,6 +243,53 @@ public interface AnalyzeContentRequestOrBuilder
    */
   com.google.cloud.dialogflow.v2.AssistQueryParametersOrBuilder getAssistQueryParamsOrBuilder();
 
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return Whether the cxParameters field is set.
+   */
+  boolean hasCxParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return The cxParameters.
+   */
+  com.google.protobuf.Struct getCxParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   */
+  com.google.protobuf.StructOrBuilder getCxParametersOrBuilder();
+
   /**
    *
    *
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/Fulfillment.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/Fulfillment.java
index 8b0efc8f7..a08c41665 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/Fulfillment.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/Fulfillment.java
@@ -339,7 +339,7 @@ java.lang.String getRequestHeadersOrDefault(
      * </code>
      *
      * @deprecated google.cloud.dialogflow.v2.Fulfillment.GenericWebService.is_cloud_function is
-     *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=106
+     *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=108
      * @return The isCloudFunction.
      */
     @java.lang.Deprecated
@@ -770,7 +770,7 @@ public java.lang.String getRequestHeadersOrThrow(java.lang.String key) {
      * </code>
      *
      * @deprecated google.cloud.dialogflow.v2.Fulfillment.GenericWebService.is_cloud_function is
-     *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=106
+     *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=108
      * @return The isCloudFunction.
      */
     @java.lang.Override
@@ -1719,7 +1719,7 @@ public Builder putAllRequestHeaders(
        * </code>
        *
        * @deprecated google.cloud.dialogflow.v2.Fulfillment.GenericWebService.is_cloud_function is
-       *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=106
+       *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=108
        * @return The isCloudFunction.
        */
       @java.lang.Override
@@ -1742,7 +1742,7 @@ public boolean getIsCloudFunction() {
        * </code>
        *
        * @deprecated google.cloud.dialogflow.v2.Fulfillment.GenericWebService.is_cloud_function is
-       *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=106
+       *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=108
        * @param value The isCloudFunction to set.
        * @return This builder for chaining.
        */
@@ -1768,7 +1768,7 @@ public Builder setIsCloudFunction(boolean value) {
        * </code>
        *
        * @deprecated google.cloud.dialogflow.v2.Fulfillment.GenericWebService.is_cloud_function is
-       *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=106
+       *     deprecated. See google/cloud/dialogflow/v2/fulfillment.proto;l=108
        * @return This builder for chaining.
        */
       @java.lang.Deprecated
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java
index 865c662f5..1159b14d8 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java
@@ -210,7 +210,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "est\022A\n\013participant\030\001 \001(\0132\'.google.cloud."
           + "dialogflow.v2.ParticipantB\003\340A\002\0224\n\013update"
           + "_mask\030\002 \001(\0132\032.google.protobuf.FieldMaskB"
-          + "\003\340A\002\"\322\003\n\025AnalyzeContentRequest\022B\n\013partic"
+          + "\003\340A\002\"\202\004\n\025AnalyzeContentRequest\022B\n\013partic"
           + "ipant\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googleap"
           + "is.com/Participant\022;\n\ntext_input\030\006 \001(\0132%"
           + ".google.cloud.dialogflow.v2.TextInputH\000\022"
@@ -221,168 +221,169 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "+.google.cloud.dialogflow.v2.QueryParame"
           + "ters\022N\n\023assist_query_params\030\016 \001(\01321.goog"
           + "le.cloud.dialogflow.v2.AssistQueryParame"
-          + "ters\022\022\n\nrequest_id\030\013 \001(\tB\007\n\005input\",\n\016Dtm"
-          + "fParameters\022\032\n\022accepts_dtmf_input\030\001 \001(\010\""
-          + "\336\003\n\026AnalyzeContentResponse\022\022\n\nreply_text"
-          + "\030\001 \001(\t\022<\n\013reply_audio\030\002 \001(\0132\'.google.clo"
-          + "ud.dialogflow.v2.OutputAudio\022N\n\025automate"
-          + "d_agent_reply\030\003 \001(\0132/.google.cloud.dialo"
-          + "gflow.v2.AutomatedAgentReply\0224\n\007message\030"
-          + "\005 \001(\0132#.google.cloud.dialogflow.v2.Messa"
-          + "ge\022T\n\036human_agent_suggestion_results\030\006 \003"
-          + "(\0132,.google.cloud.dialogflow.v2.Suggesti"
-          + "onResult\022Q\n\033end_user_suggestion_results\030"
-          + "\007 \003(\0132,.google.cloud.dialogflow.v2.Sugge"
-          + "stionResult\022C\n\017dtmf_parameters\030\t \001(\0132*.g"
-          + "oogle.cloud.dialogflow.v2.DtmfParameters"
-          + "\"\205\002\n\026SuggestArticlesRequest\022=\n\006parent\030\001 "
-          + "\001(\tB-\340A\002\372A\'\n%dialogflow.googleapis.com/P"
-          + "articipant\022A\n\016latest_message\030\002 \001(\tB)\340A\001\372"
-          + "A#\n!dialogflow.googleapis.com/Message\022\031\n"
-          + "\014context_size\030\003 \001(\005B\003\340A\001\022N\n\023assist_query"
-          + "_params\030\004 \001(\01321.google.cloud.dialogflow."
-          + "v2.AssistQueryParameters\"\213\001\n\027SuggestArti"
-          + "clesResponse\022B\n\017article_answers\030\001 \003(\0132)."
-          + "google.cloud.dialogflow.v2.ArticleAnswer"
-          + "\022\026\n\016latest_message\030\002 \001(\t\022\024\n\014context_size"
-          + "\030\003 \001(\005\"\207\002\n\030SuggestFaqAnswersRequest\022=\n\006p"
+          + "ters\022.\n\rcx_parameters\030\022 \001(\0132\027.google.pro"
+          + "tobuf.Struct\022\022\n\nrequest_id\030\013 \001(\tB\007\n\005inpu"
+          + "t\",\n\016DtmfParameters\022\032\n\022accepts_dtmf_inpu"
+          + "t\030\001 \001(\010\"\336\003\n\026AnalyzeContentResponse\022\022\n\nre"
+          + "ply_text\030\001 \001(\t\022<\n\013reply_audio\030\002 \001(\0132\'.go"
+          + "ogle.cloud.dialogflow.v2.OutputAudio\022N\n\025"
+          + "automated_agent_reply\030\003 \001(\0132/.google.clo"
+          + "ud.dialogflow.v2.AutomatedAgentReply\0224\n\007"
+          + "message\030\005 \001(\0132#.google.cloud.dialogflow."
+          + "v2.Message\022T\n\036human_agent_suggestion_res"
+          + "ults\030\006 \003(\0132,.google.cloud.dialogflow.v2."
+          + "SuggestionResult\022Q\n\033end_user_suggestion_"
+          + "results\030\007 \003(\0132,.google.cloud.dialogflow."
+          + "v2.SuggestionResult\022C\n\017dtmf_parameters\030\t"
+          + " \001(\0132*.google.cloud.dialogflow.v2.DtmfPa"
+          + "rameters\"\205\002\n\026SuggestArticlesRequest\022=\n\006p"
           + "arent\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googleap"
           + "is.com/Participant\022A\n\016latest_message\030\002 \001"
           + "(\tB)\340A\001\372A#\n!dialogflow.googleapis.com/Me"
           + "ssage\022\031\n\014context_size\030\003 \001(\005B\003\340A\001\022N\n\023assi"
           + "st_query_params\030\004 \001(\01321.google.cloud.dia"
-          + "logflow.v2.AssistQueryParameters\"\205\001\n\031Sug"
-          + "gestFaqAnswersResponse\022:\n\013faq_answers\030\001 "
-          + "\003(\0132%.google.cloud.dialogflow.v2.FaqAnsw"
-          + "er\022\026\n\016latest_message\030\002 \001(\t\022\024\n\014context_si"
-          + "ze\030\003 \001(\005\"\364\001\n\032SuggestSmartRepliesRequest\022"
-          + "=\n\006parent\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.goog"
-          + "leapis.com/Participant\022A\n\022current_text_i"
-          + "nput\030\004 \001(\0132%.google.cloud.dialogflow.v2."
-          + "TextInput\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!"
-          + "dialogflow.googleapis.com/Message\022\024\n\014con"
-          + "text_size\030\003 \001(\005\"\303\001\n\033SuggestSmartRepliesR"
-          + "esponse\022N\n\023smart_reply_answers\030\001 \003(\0132,.g"
-          + "oogle.cloud.dialogflow.v2.SmartReplyAnsw"
-          + "erB\003\340A\003\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!di"
-          + "alogflow.googleapis.com/Message\022\024\n\014conte"
-          + "xt_size\030\003 \001(\005\"[\n\013OutputAudio\022=\n\006config\030\001"
-          + " \001(\0132-.google.cloud.dialogflow.v2.Output"
-          + "AudioConfig\022\r\n\005audio\030\002 \001(\014\"\317\002\n\023Automated"
-          + "AgentReply\022P\n\026detect_intent_response\030\001 \001"
-          + "(\01320.google.cloud.dialogflow.v2.DetectIn"
-          + "tentResponse\022k\n\032automated_agent_reply_ty"
-          + "pe\030\007 \001(\0162G.google.cloud.dialogflow.v2.Au"
-          + "tomatedAgentReply.AutomatedAgentReplyTyp"
-          + "e\022\032\n\022allow_cancellation\030\010 \001(\010\"]\n\027Automat"
-          + "edAgentReplyType\022*\n&AUTOMATED_AGENT_REPL"
-          + "Y_TYPE_UNSPECIFIED\020\000\022\013\n\007PARTIAL\020\001\022\t\n\005FIN"
-          + "AL\020\002\"\344\001\n\rArticleAnswer\022\r\n\005title\030\001 \001(\t\022\013\n"
-          + "\003uri\030\002 \001(\t\022\020\n\010snippets\030\003 \003(\t\022\022\n\nconfiden"
-          + "ce\030\004 \001(\002\022I\n\010metadata\030\005 \003(\01327.google.clou"
-          + "d.dialogflow.v2.ArticleAnswer.MetadataEn"
-          + "try\022\025\n\ranswer_record\030\006 \001(\t\032/\n\rMetadataEn"
-          + "try\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\340\001\n\t"
-          + "FaqAnswer\022\016\n\006answer\030\001 \001(\t\022\022\n\nconfidence\030"
-          + "\002 \001(\002\022\020\n\010question\030\003 \001(\t\022\016\n\006source\030\004 \001(\t\022"
-          + "E\n\010metadata\030\005 \003(\01323.google.cloud.dialogf"
-          + "low.v2.FaqAnswer.MetadataEntry\022\025\n\ranswer"
-          + "_record\030\006 \001(\t\032/\n\rMetadataEntry\022\013\n\003key\030\001 "
-          + "\001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"y\n\020SmartReplyAnsw"
-          + "er\022\r\n\005reply\030\001 \001(\t\022\022\n\nconfidence\030\002 \001(\002\022B\n"
-          + "\ranswer_record\030\003 \001(\tB+\372A(\n&dialogflow.go"
-          + "ogleapis.com/AnswerRecord\"\352\002\n\020Suggestion"
-          + "Result\022#\n\005error\030\001 \001(\0132\022.google.rpc.Statu"
-          + "sH\000\022X\n\031suggest_articles_response\030\002 \001(\01323"
-          + ".google.cloud.dialogflow.v2.SuggestArtic"
-          + "lesResponseH\000\022]\n\034suggest_faq_answers_res"
-          + "ponse\030\003 \001(\01325.google.cloud.dialogflow.v2"
-          + ".SuggestFaqAnswersResponseH\000\022a\n\036suggest_"
-          + "smart_replies_response\030\004 \001(\01327.google.cl"
-          + "oud.dialogflow.v2.SuggestSmartRepliesRes"
-          + "ponseH\000B\025\n\023suggestion_response\"j\n\024Annota"
-          + "tedMessagePart\022\014\n\004text\030\001 \001(\t\022\023\n\013entity_t"
-          + "ype\030\002 \001(\t\022/\n\017formatted_value\030\003 \001(\0132\026.goo"
-          + "gle.protobuf.Value\"n\n\021MessageAnnotation\022"
-          + "?\n\005parts\030\001 \003(\01320.google.cloud.dialogflow"
-          + ".v2.AnnotatedMessagePart\022\030\n\020contain_enti"
-          + "ties\030\002 \001(\010\"\315\001\n\025AssistQueryParameters\022s\n\032"
-          + "documents_metadata_filters\030\001 \003(\0132O.googl"
-          + "e.cloud.dialogflow.v2.AssistQueryParamet"
-          + "ers.DocumentsMetadataFiltersEntry\032?\n\035Doc"
-          + "umentsMetadataFiltersEntry\022\013\n\003key\030\001 \001(\t\022"
-          + "\r\n\005value\030\002 \001(\t:\0028\0012\337\024\n\014Participants\022\245\002\n\021"
-          + "CreateParticipant\0224.google.cloud.dialogf"
-          + "low.v2.CreateParticipantRequest\032\'.google"
-          + ".cloud.dialogflow.v2.Participant\"\260\001\202\323\344\223\002"
-          + "\224\001\"4/v2/{parent=projects/*/conversations"
-          + "/*}/participants:\013participantZO\"@/v2/{pa"
-          + "rent=projects/*/locations/*/conversation"
-          + "s/*}/participants:\013participant\332A\022parent,"
-          + "participant\022\366\001\n\016GetParticipant\0221.google."
-          + "cloud.dialogflow.v2.GetParticipantReques"
-          + "t\032\'.google.cloud.dialogflow.v2.Participa"
-          + "nt\"\207\001\202\323\344\223\002z\0224/v2/{name=projects/*/conver"
-          + "sations/*/participants/*}ZB\022@/v2/{name=p"
-          + "rojects/*/locations/*/conversations/*/pa"
-          + "rticipants/*}\332A\004name\022\211\002\n\020ListParticipant"
-          + "s\0223.google.cloud.dialogflow.v2.ListParti"
-          + "cipantsRequest\0324.google.cloud.dialogflow"
-          + ".v2.ListParticipantsResponse\"\211\001\202\323\344\223\002z\0224/"
-          + "v2/{parent=projects/*/conversations/*}/p"
-          + "articipantsZB\022@/v2/{parent=projects/*/lo"
-          + "cations/*/conversations/*}/participants\332"
-          + "A\006parent\022\302\002\n\021UpdateParticipant\0224.google."
-          + "cloud.dialogflow.v2.UpdateParticipantReq"
-          + "uest\032\'.google.cloud.dialogflow.v2.Partic"
-          + "ipant\"\315\001\202\323\344\223\002\254\0012@/v2/{participant.name=p"
-          + "rojects/*/conversations/*/participants/*"
-          + "}:\013participantZ[2L/v2/{participant.name="
-          + "projects/*/locations/*/conversations/*/p"
-          + "articipants/*}:\013participant\332A\027participan"
-          + "t,update_mask\022\340\002\n\016AnalyzeContent\0221.googl"
-          + "e.cloud.dialogflow.v2.AnalyzeContentRequ"
-          + "est\0322.google.cloud.dialogflow.v2.Analyze"
-          + "ContentResponse\"\346\001\202\323\344\223\002\254\001\"J/v2/{particip"
-          + "ant=projects/*/conversations/*/participa"
-          + "nts/*}:analyzeContent:\001*Z[\"V/v2/{partici"
-          + "pant=projects/*/locations/*/conversation"
-          + "s/*/participants/*}:analyzeContent:\001*\332A\026"
-          + "participant,text_input\332A\027participant,eve"
-          + "nt_input\022\311\002\n\017SuggestArticles\0222.google.cl"
-          + "oud.dialogflow.v2.SuggestArticlesRequest"
-          + "\0323.google.cloud.dialogflow.v2.SuggestArt"
-          + "iclesResponse\"\314\001\202\323\344\223\002\274\001\"R/v2/{parent=pro"
-          + "jects/*/conversations/*/participants/*}/"
-          + "suggestions:suggestArticles:\001*Zc\"^/v2/{p"
-          + "arent=projects/*/locations/*/conversatio"
-          + "ns/*/participants/*}/suggestions:suggest"
-          + "Articles:\001*\332A\006parent\022\323\002\n\021SuggestFaqAnswe"
-          + "rs\0224.google.cloud.dialogflow.v2.SuggestF"
-          + "aqAnswersRequest\0325.google.cloud.dialogfl"
-          + "ow.v2.SuggestFaqAnswersResponse\"\320\001\202\323\344\223\002\300"
-          + "\001\"T/v2/{parent=projects/*/conversations/"
-          + "*/participants/*}/suggestions:suggestFaq"
-          + "Answers:\001*Ze\"`/v2/{parent=projects/*/loc"
-          + "ations/*/conversations/*/participants/*}"
-          + "/suggestions:suggestFaqAnswers:\001*\332A\006pare"
-          + "nt\022\335\002\n\023SuggestSmartReplies\0226.google.clou"
-          + "d.dialogflow.v2.SuggestSmartRepliesReque"
-          + "st\0327.google.cloud.dialogflow.v2.SuggestS"
-          + "martRepliesResponse\"\324\001\202\323\344\223\002\304\001\"V/v2/{pare"
-          + "nt=projects/*/conversations/*/participan"
-          + "ts/*}/suggestions:suggestSmartReplies:\001*"
-          + "Zg\"b/v2/{parent=projects/*/locations/*/c"
-          + "onversations/*/participants/*}/suggestio"
-          + "ns:suggestSmartReplies:\001*\332A\006parent\032x\312A\031d"
-          + "ialogflow.googleapis.com\322AYhttps://www.g"
-          + "oogleapis.com/auth/cloud-platform,https:"
-          + "//www.googleapis.com/auth/dialogflowB\237\001\n"
-          + "\036com.google.cloud.dialogflow.v2B\020Partici"
-          + "pantProtoP\001ZDgoogle.golang.org/genproto/"
-          + "googleapis/cloud/dialogflow/v2;dialogflo"
-          + "w\370\001\001\242\002\002DF\252\002\032Google.Cloud.Dialogflow.V2b\006"
-          + "proto3"
+          + "logflow.v2.AssistQueryParameters\"\213\001\n\027Sug"
+          + "gestArticlesResponse\022B\n\017article_answers\030"
+          + "\001 \003(\0132).google.cloud.dialogflow.v2.Artic"
+          + "leAnswer\022\026\n\016latest_message\030\002 \001(\t\022\024\n\014cont"
+          + "ext_size\030\003 \001(\005\"\207\002\n\030SuggestFaqAnswersRequ"
+          + "est\022=\n\006parent\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow."
+          + "googleapis.com/Participant\022A\n\016latest_mes"
+          + "sage\030\002 \001(\tB)\340A\001\372A#\n!dialogflow.googleapi"
+          + "s.com/Message\022\031\n\014context_size\030\003 \001(\005B\003\340A\001"
+          + "\022N\n\023assist_query_params\030\004 \001(\01321.google.c"
+          + "loud.dialogflow.v2.AssistQueryParameters"
+          + "\"\205\001\n\031SuggestFaqAnswersResponse\022:\n\013faq_an"
+          + "swers\030\001 \003(\0132%.google.cloud.dialogflow.v2"
+          + ".FaqAnswer\022\026\n\016latest_message\030\002 \001(\t\022\024\n\014co"
+          + "ntext_size\030\003 \001(\005\"\364\001\n\032SuggestSmartReplies"
+          + "Request\022=\n\006parent\030\001 \001(\tB-\340A\002\372A\'\n%dialogf"
+          + "low.googleapis.com/Participant\022A\n\022curren"
+          + "t_text_input\030\004 \001(\0132%.google.cloud.dialog"
+          + "flow.v2.TextInput\022>\n\016latest_message\030\002 \001("
+          + "\tB&\372A#\n!dialogflow.googleapis.com/Messag"
+          + "e\022\024\n\014context_size\030\003 \001(\005\"\303\001\n\033SuggestSmart"
+          + "RepliesResponse\022N\n\023smart_reply_answers\030\001"
+          + " \003(\0132,.google.cloud.dialogflow.v2.SmartR"
+          + "eplyAnswerB\003\340A\003\022>\n\016latest_message\030\002 \001(\tB"
+          + "&\372A#\n!dialogflow.googleapis.com/Message\022"
+          + "\024\n\014context_size\030\003 \001(\005\"[\n\013OutputAudio\022=\n\006"
+          + "config\030\001 \001(\0132-.google.cloud.dialogflow.v"
+          + "2.OutputAudioConfig\022\r\n\005audio\030\002 \001(\014\"\317\002\n\023A"
+          + "utomatedAgentReply\022P\n\026detect_intent_resp"
+          + "onse\030\001 \001(\01320.google.cloud.dialogflow.v2."
+          + "DetectIntentResponse\022k\n\032automated_agent_"
+          + "reply_type\030\007 \001(\0162G.google.cloud.dialogfl"
+          + "ow.v2.AutomatedAgentReply.AutomatedAgent"
+          + "ReplyType\022\032\n\022allow_cancellation\030\010 \001(\010\"]\n"
+          + "\027AutomatedAgentReplyType\022*\n&AUTOMATED_AG"
+          + "ENT_REPLY_TYPE_UNSPECIFIED\020\000\022\013\n\007PARTIAL\020"
+          + "\001\022\t\n\005FINAL\020\002\"\344\001\n\rArticleAnswer\022\r\n\005title\030"
+          + "\001 \001(\t\022\013\n\003uri\030\002 \001(\t\022\020\n\010snippets\030\003 \003(\t\022\022\n\n"
+          + "confidence\030\004 \001(\002\022I\n\010metadata\030\005 \003(\01327.goo"
+          + "gle.cloud.dialogflow.v2.ArticleAnswer.Me"
+          + "tadataEntry\022\025\n\ranswer_record\030\006 \001(\t\032/\n\rMe"
+          + "tadataEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:"
+          + "\0028\001\"\340\001\n\tFaqAnswer\022\016\n\006answer\030\001 \001(\t\022\022\n\ncon"
+          + "fidence\030\002 \001(\002\022\020\n\010question\030\003 \001(\t\022\016\n\006sourc"
+          + "e\030\004 \001(\t\022E\n\010metadata\030\005 \003(\01323.google.cloud"
+          + ".dialogflow.v2.FaqAnswer.MetadataEntry\022\025"
+          + "\n\ranswer_record\030\006 \001(\t\032/\n\rMetadataEntry\022\013"
+          + "\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"y\n\020SmartR"
+          + "eplyAnswer\022\r\n\005reply\030\001 \001(\t\022\022\n\nconfidence\030"
+          + "\002 \001(\002\022B\n\ranswer_record\030\003 \001(\tB+\372A(\n&dialo"
+          + "gflow.googleapis.com/AnswerRecord\"\352\002\n\020Su"
+          + "ggestionResult\022#\n\005error\030\001 \001(\0132\022.google.r"
+          + "pc.StatusH\000\022X\n\031suggest_articles_response"
+          + "\030\002 \001(\01323.google.cloud.dialogflow.v2.Sugg"
+          + "estArticlesResponseH\000\022]\n\034suggest_faq_ans"
+          + "wers_response\030\003 \001(\01325.google.cloud.dialo"
+          + "gflow.v2.SuggestFaqAnswersResponseH\000\022a\n\036"
+          + "suggest_smart_replies_response\030\004 \001(\01327.g"
+          + "oogle.cloud.dialogflow.v2.SuggestSmartRe"
+          + "pliesResponseH\000B\025\n\023suggestion_response\"j"
+          + "\n\024AnnotatedMessagePart\022\014\n\004text\030\001 \001(\t\022\023\n\013"
+          + "entity_type\030\002 \001(\t\022/\n\017formatted_value\030\003 \001"
+          + "(\0132\026.google.protobuf.Value\"n\n\021MessageAnn"
+          + "otation\022?\n\005parts\030\001 \003(\01320.google.cloud.di"
+          + "alogflow.v2.AnnotatedMessagePart\022\030\n\020cont"
+          + "ain_entities\030\002 \001(\010\"\315\001\n\025AssistQueryParame"
+          + "ters\022s\n\032documents_metadata_filters\030\001 \003(\013"
+          + "2O.google.cloud.dialogflow.v2.AssistQuer"
+          + "yParameters.DocumentsMetadataFiltersEntr"
+          + "y\032?\n\035DocumentsMetadataFiltersEntry\022\013\n\003ke"
+          + "y\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\0012\337\024\n\014Participa"
+          + "nts\022\245\002\n\021CreateParticipant\0224.google.cloud"
+          + ".dialogflow.v2.CreateParticipantRequest\032"
+          + "\'.google.cloud.dialogflow.v2.Participant"
+          + "\"\260\001\202\323\344\223\002\224\001\"4/v2/{parent=projects/*/conve"
+          + "rsations/*}/participants:\013participantZO\""
+          + "@/v2/{parent=projects/*/locations/*/conv"
+          + "ersations/*}/participants:\013participant\332A"
+          + "\022parent,participant\022\366\001\n\016GetParticipant\0221"
+          + ".google.cloud.dialogflow.v2.GetParticipa"
+          + "ntRequest\032\'.google.cloud.dialogflow.v2.P"
+          + "articipant\"\207\001\202\323\344\223\002z\0224/v2/{name=projects/"
+          + "*/conversations/*/participants/*}ZB\022@/v2"
+          + "/{name=projects/*/locations/*/conversati"
+          + "ons/*/participants/*}\332A\004name\022\211\002\n\020ListPar"
+          + "ticipants\0223.google.cloud.dialogflow.v2.L"
+          + "istParticipantsRequest\0324.google.cloud.di"
+          + "alogflow.v2.ListParticipantsResponse\"\211\001\202"
+          + "\323\344\223\002z\0224/v2/{parent=projects/*/conversati"
+          + "ons/*}/participantsZB\022@/v2/{parent=proje"
+          + "cts/*/locations/*/conversations/*}/parti"
+          + "cipants\332A\006parent\022\302\002\n\021UpdateParticipant\0224"
+          + ".google.cloud.dialogflow.v2.UpdatePartic"
+          + "ipantRequest\032\'.google.cloud.dialogflow.v"
+          + "2.Participant\"\315\001\202\323\344\223\002\254\0012@/v2/{participan"
+          + "t.name=projects/*/conversations/*/partic"
+          + "ipants/*}:\013participantZ[2L/v2/{participa"
+          + "nt.name=projects/*/locations/*/conversat"
+          + "ions/*/participants/*}:\013participant\332A\027pa"
+          + "rticipant,update_mask\022\340\002\n\016AnalyzeContent"
+          + "\0221.google.cloud.dialogflow.v2.AnalyzeCon"
+          + "tentRequest\0322.google.cloud.dialogflow.v2"
+          + ".AnalyzeContentResponse\"\346\001\202\323\344\223\002\254\001\"J/v2/{"
+          + "participant=projects/*/conversations/*/p"
+          + "articipants/*}:analyzeContent:\001*Z[\"V/v2/"
+          + "{participant=projects/*/locations/*/conv"
+          + "ersations/*/participants/*}:analyzeConte"
+          + "nt:\001*\332A\026participant,text_input\332A\027partici"
+          + "pant,event_input\022\311\002\n\017SuggestArticles\0222.g"
+          + "oogle.cloud.dialogflow.v2.SuggestArticle"
+          + "sRequest\0323.google.cloud.dialogflow.v2.Su"
+          + "ggestArticlesResponse\"\314\001\202\323\344\223\002\274\001\"R/v2/{pa"
+          + "rent=projects/*/conversations/*/particip"
+          + "ants/*}/suggestions:suggestArticles:\001*Zc"
+          + "\"^/v2/{parent=projects/*/locations/*/con"
+          + "versations/*/participants/*}/suggestions"
+          + ":suggestArticles:\001*\332A\006parent\022\323\002\n\021Suggest"
+          + "FaqAnswers\0224.google.cloud.dialogflow.v2."
+          + "SuggestFaqAnswersRequest\0325.google.cloud."
+          + "dialogflow.v2.SuggestFaqAnswersResponse\""
+          + "\320\001\202\323\344\223\002\300\001\"T/v2/{parent=projects/*/conver"
+          + "sations/*/participants/*}/suggestions:su"
+          + "ggestFaqAnswers:\001*Ze\"`/v2/{parent=projec"
+          + "ts/*/locations/*/conversations/*/partici"
+          + "pants/*}/suggestions:suggestFaqAnswers:\001"
+          + "*\332A\006parent\022\335\002\n\023SuggestSmartReplies\0226.goo"
+          + "gle.cloud.dialogflow.v2.SuggestSmartRepl"
+          + "iesRequest\0327.google.cloud.dialogflow.v2."
+          + "SuggestSmartRepliesResponse\"\324\001\202\323\344\223\002\304\001\"V/"
+          + "v2/{parent=projects/*/conversations/*/pa"
+          + "rticipants/*}/suggestions:suggestSmartRe"
+          + "plies:\001*Zg\"b/v2/{parent=projects/*/locat"
+          + "ions/*/conversations/*/participants/*}/s"
+          + "uggestions:suggestSmartReplies:\001*\332A\006pare"
+          + "nt\032x\312A\031dialogflow.googleapis.com\322AYhttps"
+          + "://www.googleapis.com/auth/cloud-platfor"
+          + "m,https://www.googleapis.com/auth/dialog"
+          + "flowB\237\001\n\036com.google.cloud.dialogflow.v2B"
+          + "\020ParticipantProtoP\001ZDgoogle.golang.org/g"
+          + "enproto/googleapis/cloud/dialogflow/v2;d"
+          + "ialogflow\370\001\001\242\002\002DF\252\002\032Google.Cloud.Dialogf"
+          + "low.V2b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -483,6 +484,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ReplyAudioConfig",
               "QueryParams",
               "AssistQueryParams",
+              "CxParameters",
               "RequestId",
               "Input",
             });
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/fulfillment.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/fulfillment.proto
index 5d07cec7f..b1103fe41 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/fulfillment.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/fulfillment.proto
@@ -81,8 +81,10 @@ message Fulfillment {
 
   // Represents configuration for a generic web service.
   // Dialogflow supports two mechanisms for authentications:
+  //
   // - Basic authentication with username and password.
   // - Authentication with additional authentication headers.
+  //
   // More information could be found at:
   // https://cloud.google.com/dialogflow/docs/fulfillment-configure.
   message GenericWebService {
@@ -127,6 +129,7 @@ message Fulfillment {
 
   // Required. The unique identifier of the fulfillment.
   // Supported formats:
+  //
   // - `projects/<Project ID>/agent/fulfillment`
   // - `projects/<Project ID>/locations/<Location ID>/agent/fulfillment`
   //
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto
index 0f0226979..35b6106e3 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto
@@ -352,6 +352,14 @@ message AnalyzeContentRequest {
   // Parameters for a human assist query.
   AssistQueryParameters assist_query_params = 14;
 
+  // Additional parameters to be put into Dialogflow CX session parameters. To
+  // remove a parameter from the session, clients should explicitly set the
+  // parameter value to null.
+  //
+  // Note: this field should only be used if you are connecting to a Dialogflow
+  // CX agent.
+  google.protobuf.Struct cx_parameters = 18;
+
   // A unique identifier for this request. Restricted to 36 ASCII characters.
   // A random UUID is recommended.
   // This request is only idempotent if a `request_id` is provided.
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequest.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequest.java
index 2a05c4675..fa86c21cb 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequest.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequest.java
@@ -181,6 +181,21 @@ private AnalyzeContentRequest(
                 assistQueryParams_ = subBuilder.buildPartial();
               }
 
+              break;
+            }
+          case 146:
+            {
+              com.google.protobuf.Struct.Builder subBuilder = null;
+              if (cxParameters_ != null) {
+                subBuilder = cxParameters_.toBuilder();
+              }
+              cxParameters_ =
+                  input.readMessage(com.google.protobuf.Struct.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(cxParameters_);
+                cxParameters_ = subBuilder.buildPartial();
+              }
+
               break;
             }
           default:
@@ -583,6 +598,64 @@ public com.google.cloud.dialogflow.v2beta1.AssistQueryParameters getAssistQueryP
     return getAssistQueryParams();
   }
 
+  public static final int CX_PARAMETERS_FIELD_NUMBER = 18;
+  private com.google.protobuf.Struct cxParameters_;
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return Whether the cxParameters field is set.
+   */
+  @java.lang.Override
+  public boolean hasCxParameters() {
+    return cxParameters_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return The cxParameters.
+   */
+  @java.lang.Override
+  public com.google.protobuf.Struct getCxParameters() {
+    return cxParameters_ == null ? com.google.protobuf.Struct.getDefaultInstance() : cxParameters_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   */
+  @java.lang.Override
+  public com.google.protobuf.StructOrBuilder getCxParametersOrBuilder() {
+    return getCxParameters();
+  }
+
   public static final int MESSAGE_SEND_TIME_FIELD_NUMBER = 10;
   private com.google.protobuf.Timestamp messageSendTime_;
   /**
@@ -755,6 +828,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (assistQueryParams_ != null) {
       output.writeMessage(14, getAssistQueryParams());
     }
+    if (cxParameters_ != null) {
+      output.writeMessage(18, getCxParameters());
+    }
     unknownFields.writeTo(output);
   }
 
@@ -792,6 +868,9 @@ public int getSerializedSize() {
     if (assistQueryParams_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(14, getAssistQueryParams());
     }
+    if (cxParameters_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(18, getCxParameters());
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -821,6 +900,10 @@ public boolean equals(final java.lang.Object obj) {
     if (hasAssistQueryParams()) {
       if (!getAssistQueryParams().equals(other.getAssistQueryParams())) return false;
     }
+    if (hasCxParameters() != other.hasCxParameters()) return false;
+    if (hasCxParameters()) {
+      if (!getCxParameters().equals(other.getCxParameters())) return false;
+    }
     if (hasMessageSendTime() != other.hasMessageSendTime()) return false;
     if (hasMessageSendTime()) {
       if (!getMessageSendTime().equals(other.getMessageSendTime())) return false;
@@ -862,6 +945,10 @@ public int hashCode() {
       hash = (37 * hash) + ASSIST_QUERY_PARAMS_FIELD_NUMBER;
       hash = (53 * hash) + getAssistQueryParams().hashCode();
     }
+    if (hasCxParameters()) {
+      hash = (37 * hash) + CX_PARAMETERS_FIELD_NUMBER;
+      hash = (53 * hash) + getCxParameters().hashCode();
+    }
     if (hasMessageSendTime()) {
       hash = (37 * hash) + MESSAGE_SEND_TIME_FIELD_NUMBER;
       hash = (53 * hash) + getMessageSendTime().hashCode();
@@ -1046,6 +1133,12 @@ public Builder clear() {
         assistQueryParams_ = null;
         assistQueryParamsBuilder_ = null;
       }
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = null;
+      } else {
+        cxParameters_ = null;
+        cxParametersBuilder_ = null;
+      }
       if (messageSendTimeBuilder_ == null) {
         messageSendTime_ = null;
       } else {
@@ -1113,6 +1206,11 @@ public com.google.cloud.dialogflow.v2beta1.AnalyzeContentRequest buildPartial()
       } else {
         result.assistQueryParams_ = assistQueryParamsBuilder_.build();
       }
+      if (cxParametersBuilder_ == null) {
+        result.cxParameters_ = cxParameters_;
+      } else {
+        result.cxParameters_ = cxParametersBuilder_.build();
+      }
       if (messageSendTimeBuilder_ == null) {
         result.messageSendTime_ = messageSendTime_;
       } else {
@@ -1183,6 +1281,9 @@ public Builder mergeFrom(com.google.cloud.dialogflow.v2beta1.AnalyzeContentReque
       if (other.hasAssistQueryParams()) {
         mergeAssistQueryParams(other.getAssistQueryParams());
       }
+      if (other.hasCxParameters()) {
+        mergeCxParameters(other.getCxParameters());
+      }
       if (other.hasMessageSendTime()) {
         mergeMessageSendTime(other.getMessageSendTime());
       }
@@ -2399,6 +2500,225 @@ public Builder clearAssistQueryParams() {
       return assistQueryParamsBuilder_;
     }
 
+    private com.google.protobuf.Struct cxParameters_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Struct,
+            com.google.protobuf.Struct.Builder,
+            com.google.protobuf.StructOrBuilder>
+        cxParametersBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     *
+     * @return Whether the cxParameters field is set.
+     */
+    public boolean hasCxParameters() {
+      return cxParametersBuilder_ != null || cxParameters_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     *
+     * @return The cxParameters.
+     */
+    public com.google.protobuf.Struct getCxParameters() {
+      if (cxParametersBuilder_ == null) {
+        return cxParameters_ == null
+            ? com.google.protobuf.Struct.getDefaultInstance()
+            : cxParameters_;
+      } else {
+        return cxParametersBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder setCxParameters(com.google.protobuf.Struct value) {
+      if (cxParametersBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        cxParameters_ = value;
+        onChanged();
+      } else {
+        cxParametersBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder setCxParameters(com.google.protobuf.Struct.Builder builderForValue) {
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = builderForValue.build();
+        onChanged();
+      } else {
+        cxParametersBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder mergeCxParameters(com.google.protobuf.Struct value) {
+      if (cxParametersBuilder_ == null) {
+        if (cxParameters_ != null) {
+          cxParameters_ =
+              com.google.protobuf.Struct.newBuilder(cxParameters_).mergeFrom(value).buildPartial();
+        } else {
+          cxParameters_ = value;
+        }
+        onChanged();
+      } else {
+        cxParametersBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public Builder clearCxParameters() {
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = null;
+        onChanged();
+      } else {
+        cxParameters_ = null;
+        cxParametersBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public com.google.protobuf.Struct.Builder getCxParametersBuilder() {
+
+      onChanged();
+      return getCxParametersFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    public com.google.protobuf.StructOrBuilder getCxParametersOrBuilder() {
+      if (cxParametersBuilder_ != null) {
+        return cxParametersBuilder_.getMessageOrBuilder();
+      } else {
+        return cxParameters_ == null
+            ? com.google.protobuf.Struct.getDefaultInstance()
+            : cxParameters_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Struct,
+            com.google.protobuf.Struct.Builder,
+            com.google.protobuf.StructOrBuilder>
+        getCxParametersFieldBuilder() {
+      if (cxParametersBuilder_ == null) {
+        cxParametersBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.protobuf.Struct,
+                com.google.protobuf.Struct.Builder,
+                com.google.protobuf.StructOrBuilder>(
+                getCxParameters(), getParentForChildren(), isClean());
+        cxParameters_ = null;
+      }
+      return cxParametersBuilder_;
+    }
+
     private com.google.protobuf.Timestamp messageSendTime_;
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.protobuf.Timestamp,
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequestOrBuilder.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequestOrBuilder.java
index 08aa84b96..85b221fe6 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequestOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AnalyzeContentRequestOrBuilder.java
@@ -244,6 +244,53 @@ public interface AnalyzeContentRequestOrBuilder
   com.google.cloud.dialogflow.v2beta1.AssistQueryParametersOrBuilder
       getAssistQueryParamsOrBuilder();
 
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return Whether the cxParameters field is set.
+   */
+  boolean hasCxParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   *
+   * @return The cxParameters.
+   */
+  com.google.protobuf.Struct getCxParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 18;</code>
+   */
+  com.google.protobuf.StructOrBuilder getCxParametersOrBuilder();
+
   /**
    *
    *
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AudioConfigProto.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AudioConfigProto.java
index 8641de3ab..f169adc85 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AudioConfigProto.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AudioConfigProto.java
@@ -131,12 +131,14 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "\005\022\014\n\010DTMF_SIX\020\006\022\016\n\nDTMF_SEVEN\020\007\022\016\n\nDTMF_"
           + "EIGHT\020\010\022\r\n\tDTMF_NINE\020\t\022\r\n\tDTMF_ZERO\020\n\022\n\n"
           + "\006DTMF_A\020\013\022\n\n\006DTMF_B\020\014\022\n\n\006DTMF_C\020\r\022\n\n\006DTM"
-          + "F_D\020\016\022\r\n\tDTMF_STAR\020\017\022\016\n\nDTMF_POUND\020\020B\256\001\n"
+          + "F_D\020\016\022\r\n\tDTMF_STAR\020\017\022\016\n\nDTMF_POUND\020\020B\206\002\n"
           + "#com.google.cloud.dialogflow.v2beta1B\020Au"
           + "dioConfigProtoP\001ZIgoogle.golang.org/genp"
           + "roto/googleapis/cloud/dialogflow/v2beta1"
           + ";dialogflow\370\001\001\242\002\002DF\252\002\037Google.Cloud.Dialo"
-          + "gflow.V2beta1b\006proto3"
+          + "gflow.V2beta1\352AU\n\033automl.googleapis.com/"
+          + "Model\0226projects/{project}/locations/{loc"
+          + "ation}/models/{model}b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -222,6 +224,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     com.google.protobuf.ExtensionRegistry registry =
         com.google.protobuf.ExtensionRegistry.newInstance();
     registry.add(com.google.api.FieldBehaviorProto.fieldBehavior);
+    registry.add(com.google.api.ResourceProto.resourceDefinition);
     com.google.protobuf.Descriptors.FileDescriptor.internalUpdateFileDescriptor(
         descriptor, registry);
     com.google.api.FieldBehaviorProto.getDescriptor();
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReply.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReply.java
index 19fd56bad..41e308b66 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReply.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReply.java
@@ -821,7 +821,7 @@ public com.google.protobuf.StructOrBuilder getParametersOrBuilder() {
    * <code>.google.protobuf.Struct cx_session_parameters = 6 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.AutomatedAgentReply.cx_session_parameters is
-   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=456
+   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=474
    * @return Whether the cxSessionParameters field is set.
    */
   @java.lang.Override
@@ -841,7 +841,7 @@ public boolean hasCxSessionParameters() {
    * <code>.google.protobuf.Struct cx_session_parameters = 6 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.AutomatedAgentReply.cx_session_parameters is
-   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=456
+   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=474
    * @return The cxSessionParameters.
    */
   @java.lang.Override
@@ -2682,7 +2682,7 @@ public com.google.protobuf.StructOrBuilder getParametersOrBuilder() {
      * <code>.google.protobuf.Struct cx_session_parameters = 6 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.AutomatedAgentReply.cx_session_parameters is
-     *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=456
+     *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=474
      * @return Whether the cxSessionParameters field is set.
      */
     @java.lang.Deprecated
@@ -2701,7 +2701,7 @@ public boolean hasCxSessionParameters() {
      * <code>.google.protobuf.Struct cx_session_parameters = 6 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.AutomatedAgentReply.cx_session_parameters is
-     *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=456
+     *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=474
      * @return The cxSessionParameters.
      */
     @java.lang.Deprecated
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReplyOrBuilder.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReplyOrBuilder.java
index 9fb661517..23256f704 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReplyOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/AutomatedAgentReplyOrBuilder.java
@@ -263,7 +263,7 @@ com.google.cloud.dialogflow.v2beta1.ResponseMessageOrBuilder getResponseMessages
    * <code>.google.protobuf.Struct cx_session_parameters = 6 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.AutomatedAgentReply.cx_session_parameters is
-   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=456
+   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=474
    * @return Whether the cxSessionParameters field is set.
    */
   @java.lang.Deprecated
@@ -280,7 +280,7 @@ com.google.cloud.dialogflow.v2beta1.ResponseMessageOrBuilder getResponseMessages
    * <code>.google.protobuf.Struct cx_session_parameters = 6 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.AutomatedAgentReply.cx_session_parameters is
-   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=456
+   *     deprecated. See google/cloud/dialogflow/v2beta1/participant.proto;l=474
    * @return The cxSessionParameters.
    */
   @java.lang.Deprecated
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/Fulfillment.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/Fulfillment.java
index 93976a384..65e510dea 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/Fulfillment.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/Fulfillment.java
@@ -332,7 +332,7 @@ java.lang.String getRequestHeadersOrDefault(
      * </code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.Fulfillment.GenericWebService.is_cloud_function
-     *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=106
+     *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=108
      * @return The isCloudFunction.
      */
     @java.lang.Deprecated
@@ -755,7 +755,7 @@ public java.lang.String getRequestHeadersOrThrow(java.lang.String key) {
      * </code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.Fulfillment.GenericWebService.is_cloud_function
-     *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=106
+     *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=108
      * @return The isCloudFunction.
      */
     @java.lang.Override
@@ -1695,7 +1695,7 @@ public Builder putAllRequestHeaders(
        * </code>
        *
        * @deprecated google.cloud.dialogflow.v2beta1.Fulfillment.GenericWebService.is_cloud_function
-       *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=106
+       *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=108
        * @return The isCloudFunction.
        */
       @java.lang.Override
@@ -1718,7 +1718,7 @@ public boolean getIsCloudFunction() {
        * </code>
        *
        * @deprecated google.cloud.dialogflow.v2beta1.Fulfillment.GenericWebService.is_cloud_function
-       *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=106
+       *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=108
        * @param value The isCloudFunction to set.
        * @return This builder for chaining.
        */
@@ -1744,7 +1744,7 @@ public Builder setIsCloudFunction(boolean value) {
        * </code>
        *
        * @deprecated google.cloud.dialogflow.v2beta1.Fulfillment.GenericWebService.is_cloud_function
-       *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=106
+       *     is deprecated. See google/cloud/dialogflow/v2beta1/fulfillment.proto;l=108
        * @return This builder for chaining.
        */
       @java.lang.Deprecated
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfig.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfig.java
index 92bd865de..c513cf009 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfig.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfig.java
@@ -344,7 +344,7 @@ public boolean getEnableWordInfo() {
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @return A list containing the phraseHints.
    */
   @java.lang.Deprecated
@@ -368,7 +368,7 @@ public com.google.protobuf.ProtocolStringList getPhraseHintsList() {
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @return The count of phraseHints.
    */
   @java.lang.Deprecated
@@ -392,7 +392,7 @@ public int getPhraseHintsCount() {
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @param index The index of the element to return.
    * @return The phraseHints at the given index.
    */
@@ -417,7 +417,7 @@ public java.lang.String getPhraseHints(int index) {
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @param index The index of the value to return.
    * @return The bytes of the phraseHints at the given index.
    */
@@ -1563,7 +1563,7 @@ private void ensurePhraseHintsIsMutable() {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @return A list containing the phraseHints.
      */
     @java.lang.Deprecated
@@ -1587,7 +1587,7 @@ public com.google.protobuf.ProtocolStringList getPhraseHintsList() {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @return The count of phraseHints.
      */
     @java.lang.Deprecated
@@ -1611,7 +1611,7 @@ public int getPhraseHintsCount() {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @param index The index of the element to return.
      * @return The phraseHints at the given index.
      */
@@ -1636,7 +1636,7 @@ public java.lang.String getPhraseHints(int index) {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @param index The index of the value to return.
      * @return The bytes of the phraseHints at the given index.
      */
@@ -1661,7 +1661,7 @@ public com.google.protobuf.ByteString getPhraseHintsBytes(int index) {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @param index The index to set the value at.
      * @param value The phraseHints to set.
      * @return This builder for chaining.
@@ -1693,7 +1693,7 @@ public Builder setPhraseHints(int index, java.lang.String value) {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @param value The phraseHints to add.
      * @return This builder for chaining.
      */
@@ -1724,7 +1724,7 @@ public Builder addPhraseHints(java.lang.String value) {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @param values The phraseHints to add.
      * @return This builder for chaining.
      */
@@ -1752,7 +1752,7 @@ public Builder addAllPhraseHints(java.lang.Iterable<java.lang.String> values) {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @return This builder for chaining.
      */
     @java.lang.Deprecated
@@ -1779,7 +1779,7 @@ public Builder clearPhraseHints() {
      * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
      *
      * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+     *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
      * @param value The bytes of the phraseHints to add.
      * @return This builder for chaining.
      */
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfigOrBuilder.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfigOrBuilder.java
index b8194b71b..84bdfd3ce 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfigOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputAudioConfigOrBuilder.java
@@ -131,7 +131,7 @@ public interface InputAudioConfigOrBuilder
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @return A list containing the phraseHints.
    */
   @java.lang.Deprecated
@@ -153,7 +153,7 @@ public interface InputAudioConfigOrBuilder
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @return The count of phraseHints.
    */
   @java.lang.Deprecated
@@ -175,7 +175,7 @@ public interface InputAudioConfigOrBuilder
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @param index The index of the element to return.
    * @return The phraseHints at the given index.
    */
@@ -198,7 +198,7 @@ public interface InputAudioConfigOrBuilder
    * <code>repeated string phrase_hints = 4 [deprecated = true];</code>
    *
    * @deprecated google.cloud.dialogflow.v2beta1.InputAudioConfig.phrase_hints is deprecated. See
-   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=212
+   *     google/cloud/dialogflow/v2beta1/audio_config.proto;l=216
    * @param index The index of the value to return.
    * @return The bytes of the phraseHints at the given index.
    */
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputTextConfig.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputTextConfig.java
new file mode 100644
index 000000000..d67d4600f
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputTextConfig.java
@@ -0,0 +1,652 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2beta1/participant.proto
+
+package com.google.cloud.dialogflow.v2beta1;
+
+/**
+ *
+ *
+ * <pre>
+ * Defines the language used in the input text.
+ * </pre>
+ *
+ * Protobuf type {@code google.cloud.dialogflow.v2beta1.InputTextConfig}
+ */
+public final class InputTextConfig extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2beta1.InputTextConfig)
+    InputTextConfigOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use InputTextConfig.newBuilder() to construct.
+  private InputTextConfig(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private InputTextConfig() {
+    languageCode_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new InputTextConfig();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private InputTextConfig(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              languageCode_ = s;
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+        .internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+        .internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.cloud.dialogflow.v2beta1.InputTextConfig.class,
+            com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder.class);
+  }
+
+  public static final int LANGUAGE_CODE_FIELD_NUMBER = 1;
+  private volatile java.lang.Object languageCode_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The language of this conversational query. See [Language
+   * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+   * for a list of the currently supported language codes.
+   * </pre>
+   *
+   * <code>string language_code = 1;</code>
+   *
+   * @return The languageCode.
+   */
+  @java.lang.Override
+  public java.lang.String getLanguageCode() {
+    java.lang.Object ref = languageCode_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      languageCode_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The language of this conversational query. See [Language
+   * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+   * for a list of the currently supported language codes.
+   * </pre>
+   *
+   * <code>string language_code = 1;</code>
+   *
+   * @return The bytes for languageCode.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getLanguageCodeBytes() {
+    java.lang.Object ref = languageCode_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      languageCode_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(languageCode_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, languageCode_);
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(languageCode_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, languageCode_);
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.cloud.dialogflow.v2beta1.InputTextConfig)) {
+      return super.equals(obj);
+    }
+    com.google.cloud.dialogflow.v2beta1.InputTextConfig other =
+        (com.google.cloud.dialogflow.v2beta1.InputTextConfig) obj;
+
+    if (!getLanguageCode().equals(other.getLanguageCode())) return false;
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + LANGUAGE_CODE_FIELD_NUMBER;
+    hash = (53 * hash) + getLanguageCode().hashCode();
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(com.google.cloud.dialogflow.v2beta1.InputTextConfig prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Defines the language used in the input text.
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.dialogflow.v2beta1.InputTextConfig}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2beta1.InputTextConfig)
+      com.google.cloud.dialogflow.v2beta1.InputTextConfigOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.dialogflow.v2beta1.InputTextConfig.class,
+              com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder.class);
+    }
+
+    // Construct using com.google.cloud.dialogflow.v2beta1.InputTextConfig.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      languageCode_ = "";
+
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.InputTextConfig getDefaultInstanceForType() {
+      return com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.InputTextConfig build() {
+      com.google.cloud.dialogflow.v2beta1.InputTextConfig result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.InputTextConfig buildPartial() {
+      com.google.cloud.dialogflow.v2beta1.InputTextConfig result =
+          new com.google.cloud.dialogflow.v2beta1.InputTextConfig(this);
+      result.languageCode_ = languageCode_;
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.cloud.dialogflow.v2beta1.InputTextConfig) {
+        return mergeFrom((com.google.cloud.dialogflow.v2beta1.InputTextConfig) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.cloud.dialogflow.v2beta1.InputTextConfig other) {
+      if (other == com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance())
+        return this;
+      if (!other.getLanguageCode().isEmpty()) {
+        languageCode_ = other.languageCode_;
+        onChanged();
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.cloud.dialogflow.v2beta1.InputTextConfig parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.cloud.dialogflow.v2beta1.InputTextConfig) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private java.lang.Object languageCode_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Required. The language of this conversational query. See [Language
+     * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+     * for a list of the currently supported language codes.
+     * </pre>
+     *
+     * <code>string language_code = 1;</code>
+     *
+     * @return The languageCode.
+     */
+    public java.lang.String getLanguageCode() {
+      java.lang.Object ref = languageCode_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        languageCode_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The language of this conversational query. See [Language
+     * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+     * for a list of the currently supported language codes.
+     * </pre>
+     *
+     * <code>string language_code = 1;</code>
+     *
+     * @return The bytes for languageCode.
+     */
+    public com.google.protobuf.ByteString getLanguageCodeBytes() {
+      java.lang.Object ref = languageCode_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        languageCode_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The language of this conversational query. See [Language
+     * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+     * for a list of the currently supported language codes.
+     * </pre>
+     *
+     * <code>string language_code = 1;</code>
+     *
+     * @param value The languageCode to set.
+     * @return This builder for chaining.
+     */
+    public Builder setLanguageCode(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      languageCode_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The language of this conversational query. See [Language
+     * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+     * for a list of the currently supported language codes.
+     * </pre>
+     *
+     * <code>string language_code = 1;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearLanguageCode() {
+
+      languageCode_ = getDefaultInstance().getLanguageCode();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The language of this conversational query. See [Language
+     * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+     * for a list of the currently supported language codes.
+     * </pre>
+     *
+     * <code>string language_code = 1;</code>
+     *
+     * @param value The bytes for languageCode to set.
+     * @return This builder for chaining.
+     */
+    public Builder setLanguageCodeBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      languageCode_ = value;
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.InputTextConfig)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.InputTextConfig)
+  private static final com.google.cloud.dialogflow.v2beta1.InputTextConfig DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2beta1.InputTextConfig();
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.InputTextConfig getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<InputTextConfig> PARSER =
+      new com.google.protobuf.AbstractParser<InputTextConfig>() {
+        @java.lang.Override
+        public InputTextConfig parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new InputTextConfig(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<InputTextConfig> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<InputTextConfig> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.InputTextConfig getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputTextConfigOrBuilder.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputTextConfigOrBuilder.java
new file mode 100644
index 000000000..c43667d49
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/InputTextConfigOrBuilder.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2beta1/participant.proto
+
+package com.google.cloud.dialogflow.v2beta1;
+
+public interface InputTextConfigOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.cloud.dialogflow.v2beta1.InputTextConfig)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The language of this conversational query. See [Language
+   * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+   * for a list of the currently supported language codes.
+   * </pre>
+   *
+   * <code>string language_code = 1;</code>
+   *
+   * @return The languageCode.
+   */
+  java.lang.String getLanguageCode();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The language of this conversational query. See [Language
+   * Support](https://cloud.google.com/dialogflow/docs/reference/language)
+   * for a list of the currently supported language codes.
+   * </pre>
+   *
+   * <code>string language_code = 1;</code>
+   *
+   * @return The bytes for languageCode.
+   */
+  com.google.protobuf.ByteString getLanguageCodeBytes();
+}
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantProto.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantProto.java
index 0c3f93250..449db6c3c 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantProto.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ParticipantProto.java
@@ -91,6 +91,18 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
       internal_static_google_cloud_dialogflow_v2beta1_AnalyzeContentResponse_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_google_cloud_dialogflow_v2beta1_AnalyzeContentResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_fieldAccessorTable;
   static final com.google.protobuf.Descriptors.Descriptor
       internal_static_google_cloud_dialogflow_v2beta1_AnnotatedMessagePart_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
@@ -199,6 +211,14 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
       internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_EndInteraction_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_EndInteraction_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_fieldAccessorTable;
   static final com.google.protobuf.Descriptors.Descriptor
       internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_TelephonyTransferCall_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
@@ -300,7 +320,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "2beta1.AssistQueryParameters.DocumentsMe"
           + "tadataFiltersEntry\032?\n\035DocumentsMetadataF"
           + "iltersEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:"
-          + "\0028\001\"\242\004\n\025AnalyzeContentRequest\022B\n\013partici"
+          + "\0028\001\"\322\004\n\025AnalyzeContentRequest\022B\n\013partici"
           + "pant\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googleapi"
           + "s.com/Participant\022@\n\ntext_input\030\006 \001(\0132*."
           + "google.cloud.dialogflow.v2beta1.TextInpu"
@@ -311,216 +331,263 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "_params\030\t \001(\01320.google.cloud.dialogflow."
           + "v2beta1.QueryParameters\022S\n\023assist_query_"
           + "params\030\016 \001(\01326.google.cloud.dialogflow.v"
-          + "2beta1.AssistQueryParameters\0225\n\021message_"
-          + "send_time\030\n \001(\0132\032.google.protobuf.Timest"
-          + "amp\022\022\n\nrequest_id\030\013 \001(\tB\007\n\005input\",\n\016Dtmf"
-          + "Parameters\022\032\n\022accepts_dtmf_input\030\001 \001(\010\"\374"
-          + "\003\n\026AnalyzeContentResponse\022\022\n\nreply_text\030"
-          + "\001 \001(\t\022A\n\013reply_audio\030\002 \001(\0132,.google.clou"
-          + "d.dialogflow.v2beta1.OutputAudio\022S\n\025auto"
-          + "mated_agent_reply\030\003 \001(\01324.google.cloud.d"
-          + "ialogflow.v2beta1.AutomatedAgentReply\0229\n"
-          + "\007message\030\005 \001(\0132(.google.cloud.dialogflow"
-          + ".v2beta1.Message\022Y\n\036human_agent_suggesti"
-          + "on_results\030\006 \003(\01321.google.cloud.dialogfl"
-          + "ow.v2beta1.SuggestionResult\022V\n\033end_user_"
-          + "suggestion_results\030\007 \003(\01321.google.cloud."
-          + "dialogflow.v2beta1.SuggestionResult\022H\n\017d"
-          + "tmf_parameters\030\t \001(\0132/.google.cloud.dial"
-          + "ogflow.v2beta1.DtmfParameters\"j\n\024Annotat"
-          + "edMessagePart\022\014\n\004text\030\001 \001(\t\022\023\n\013entity_ty"
-          + "pe\030\002 \001(\t\022/\n\017formatted_value\030\003 \001(\0132\026.goog"
-          + "le.protobuf.Value\"s\n\021MessageAnnotation\022D"
-          + "\n\005parts\030\001 \003(\01325.google.cloud.dialogflow."
-          + "v2beta1.AnnotatedMessagePart\022\030\n\020contain_"
-          + "entities\030\002 \001(\010\"\325\001\n\rArticleAnswer\022\r\n\005titl"
-          + "e\030\001 \001(\t\022\013\n\003uri\030\002 \001(\t\022\020\n\010snippets\030\003 \003(\t\022N"
-          + "\n\010metadata\030\005 \003(\0132<.google.cloud.dialogfl"
-          + "ow.v2beta1.ArticleAnswer.MetadataEntry\022\025"
-          + "\n\ranswer_record\030\006 \001(\t\032/\n\rMetadataEntry\022\013"
-          + "\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\345\001\n\tFaqAn"
-          + "swer\022\016\n\006answer\030\001 \001(\t\022\022\n\nconfidence\030\002 \001(\002"
-          + "\022\020\n\010question\030\003 \001(\t\022\016\n\006source\030\004 \001(\t\022J\n\010me"
-          + "tadata\030\005 \003(\01328.google.cloud.dialogflow.v"
-          + "2beta1.FaqAnswer.MetadataEntry\022\025\n\ranswer"
-          + "_record\030\006 \001(\t\032/\n\rMetadataEntry\022\013\n\003key\030\001 "
-          + "\001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"y\n\020SmartReplyAnsw"
-          + "er\022\r\n\005reply\030\001 \001(\t\022\022\n\nconfidence\030\002 \001(\002\022B\n"
-          + "\ranswer_record\030\003 \001(\tB+\372A(\n&dialogflow.go"
-          + "ogleapis.com/AnswerRecord\"\371\002\n\020Suggestion"
-          + "Result\022#\n\005error\030\001 \001(\0132\022.google.rpc.Statu"
-          + "sH\000\022]\n\031suggest_articles_response\030\002 \001(\01328"
-          + ".google.cloud.dialogflow.v2beta1.Suggest"
-          + "ArticlesResponseH\000\022b\n\034suggest_faq_answer"
-          + "s_response\030\003 \001(\0132:.google.cloud.dialogfl"
-          + "ow.v2beta1.SuggestFaqAnswersResponseH\000\022f"
-          + "\n\036suggest_smart_replies_response\030\004 \001(\0132<"
-          + ".google.cloud.dialogflow.v2beta1.Suggest"
-          + "SmartRepliesResponseH\000B\025\n\023suggestion_res"
-          + "ponse\"\217\002\n\026SuggestArticlesRequest\022=\n\006pare"
-          + "nt\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googleapis."
-          + "com/Participant\022A\n\016latest_message\030\002 \001(\tB"
-          + ")\340A\001\372A#\n!dialogflow.googleapis.com/Messa"
-          + "ge\022\031\n\014context_size\030\003 \001(\005B\003\340A\001\022X\n\023assist_"
-          + "query_params\030\004 \001(\01326.google.cloud.dialog"
-          + "flow.v2beta1.AssistQueryParametersB\003\340A\001\""
-          + "\220\001\n\027SuggestArticlesResponse\022G\n\017article_a"
-          + "nswers\030\001 \003(\0132..google.cloud.dialogflow.v"
-          + "2beta1.ArticleAnswer\022\026\n\016latest_message\030\002"
-          + " \001(\t\022\024\n\014context_size\030\003 \001(\005\"\221\002\n\030SuggestFa"
-          + "qAnswersRequest\022=\n\006parent\030\001 \001(\tB-\340A\002\372A\'\n"
-          + "%dialogflow.googleapis.com/Participant\022A"
-          + "\n\016latest_message\030\002 \001(\tB)\340A\001\372A#\n!dialogfl"
-          + "ow.googleapis.com/Message\022\031\n\014context_siz"
-          + "e\030\003 \001(\005B\003\340A\001\022X\n\023assist_query_params\030\004 \001("
-          + "\01326.google.cloud.dialogflow.v2beta1.Assi"
-          + "stQueryParametersB\003\340A\001\"\212\001\n\031SuggestFaqAns"
-          + "wersResponse\022?\n\013faq_answers\030\001 \003(\0132*.goog"
-          + "le.cloud.dialogflow.v2beta1.FaqAnswer\022\026\n"
+          + "2beta1.AssistQueryParameters\022.\n\rcx_param"
+          + "eters\030\022 \001(\0132\027.google.protobuf.Struct\0225\n\021"
+          + "message_send_time\030\n \001(\0132\032.google.protobu"
+          + "f.Timestamp\022\022\n\nrequest_id\030\013 \001(\tB\007\n\005input"
+          + "\",\n\016DtmfParameters\022\032\n\022accepts_dtmf_input"
+          + "\030\001 \001(\010\"\374\003\n\026AnalyzeContentResponse\022\022\n\nrep"
+          + "ly_text\030\001 \001(\t\022A\n\013reply_audio\030\002 \001(\0132,.goo"
+          + "gle.cloud.dialogflow.v2beta1.OutputAudio"
+          + "\022S\n\025automated_agent_reply\030\003 \001(\01324.google"
+          + ".cloud.dialogflow.v2beta1.AutomatedAgent"
+          + "Reply\0229\n\007message\030\005 \001(\0132(.google.cloud.di"
+          + "alogflow.v2beta1.Message\022Y\n\036human_agent_"
+          + "suggestion_results\030\006 \003(\01321.google.cloud."
+          + "dialogflow.v2beta1.SuggestionResult\022V\n\033e"
+          + "nd_user_suggestion_results\030\007 \003(\01321.googl"
+          + "e.cloud.dialogflow.v2beta1.SuggestionRes"
+          + "ult\022H\n\017dtmf_parameters\030\t \001(\0132/.google.cl"
+          + "oud.dialogflow.v2beta1.DtmfParameters\"(\n"
+          + "\017InputTextConfig\022\025\n\rlanguage_code\030\001 \001(\t\""
+          + "\317\005\n\036StreamingAnalyzeContentRequest\022B\n\013pa"
+          + "rticipant\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.goog"
+          + "leapis.com/Participant\022I\n\014audio_config\030\002"
+          + " \001(\01321.google.cloud.dialogflow.v2beta1.I"
+          + "nputAudioConfigH\000\022G\n\013text_config\030\003 \001(\01320"
+          + ".google.cloud.dialogflow.v2beta1.InputTe"
+          + "xtConfigH\000\022N\n\022reply_audio_config\030\004 \001(\01322"
+          + ".google.cloud.dialogflow.v2beta1.OutputA"
+          + "udioConfig\022\025\n\013input_audio\030\005 \001(\014H\001\022\024\n\ninp"
+          + "ut_text\030\006 \001(\tH\001\022J\n\ninput_dtmf\030\t \001(\01324.go"
+          + "ogle.cloud.dialogflow.v2beta1.TelephonyD"
+          + "tmfEventsH\001\022F\n\014query_params\030\007 \001(\01320.goog"
+          + "le.cloud.dialogflow.v2beta1.QueryParamet"
+          + "ers\022S\n\023assist_query_params\030\010 \001(\01326.googl"
+          + "e.cloud.dialogflow.v2beta1.AssistQueryPa"
+          + "rameters\022.\n\rcx_parameters\030\r \001(\0132\027.google"
+          + ".protobuf.Struct\022,\n$enable_partial_autom"
+          + "ated_agent_reply\030\014 \001(\010B\010\n\006configB\007\n\005inpu"
+          + "t\"\336\004\n\037StreamingAnalyzeContentResponse\022W\n"
+          + "\022recognition_result\030\001 \001(\0132;.google.cloud"
+          + ".dialogflow.v2beta1.StreamingRecognition"
+          + "Result\022\022\n\nreply_text\030\002 \001(\t\022A\n\013reply_audi"
+          + "o\030\003 \001(\0132,.google.cloud.dialogflow.v2beta"
+          + "1.OutputAudio\022S\n\025automated_agent_reply\030\004"
+          + " \001(\01324.google.cloud.dialogflow.v2beta1.A"
+          + "utomatedAgentReply\0229\n\007message\030\006 \001(\0132(.go"
+          + "ogle.cloud.dialogflow.v2beta1.Message\022Y\n"
+          + "\036human_agent_suggestion_results\030\007 \003(\01321."
+          + "google.cloud.dialogflow.v2beta1.Suggesti"
+          + "onResult\022V\n\033end_user_suggestion_results\030"
+          + "\010 \003(\01321.google.cloud.dialogflow.v2beta1."
+          + "SuggestionResult\022H\n\017dtmf_parameters\030\n \001("
+          + "\0132/.google.cloud.dialogflow.v2beta1.Dtmf"
+          + "Parameters\"j\n\024AnnotatedMessagePart\022\014\n\004te"
+          + "xt\030\001 \001(\t\022\023\n\013entity_type\030\002 \001(\t\022/\n\017formatt"
+          + "ed_value\030\003 \001(\0132\026.google.protobuf.Value\"s"
+          + "\n\021MessageAnnotation\022D\n\005parts\030\001 \003(\01325.goo"
+          + "gle.cloud.dialogflow.v2beta1.AnnotatedMe"
+          + "ssagePart\022\030\n\020contain_entities\030\002 \001(\010\"\325\001\n\r"
+          + "ArticleAnswer\022\r\n\005title\030\001 \001(\t\022\013\n\003uri\030\002 \001("
+          + "\t\022\020\n\010snippets\030\003 \003(\t\022N\n\010metadata\030\005 \003(\0132<."
+          + "google.cloud.dialogflow.v2beta1.ArticleA"
+          + "nswer.MetadataEntry\022\025\n\ranswer_record\030\006 \001"
+          + "(\t\032/\n\rMetadataEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005valu"
+          + "e\030\002 \001(\t:\0028\001\"\345\001\n\tFaqAnswer\022\016\n\006answer\030\001 \001("
+          + "\t\022\022\n\nconfidence\030\002 \001(\002\022\020\n\010question\030\003 \001(\t\022"
+          + "\016\n\006source\030\004 \001(\t\022J\n\010metadata\030\005 \003(\01328.goog"
+          + "le.cloud.dialogflow.v2beta1.FaqAnswer.Me"
+          + "tadataEntry\022\025\n\ranswer_record\030\006 \001(\t\032/\n\rMe"
+          + "tadataEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:"
+          + "\0028\001\"y\n\020SmartReplyAnswer\022\r\n\005reply\030\001 \001(\t\022\022"
+          + "\n\nconfidence\030\002 \001(\002\022B\n\ranswer_record\030\003 \001("
+          + "\tB+\372A(\n&dialogflow.googleapis.com/Answer"
+          + "Record\"\371\002\n\020SuggestionResult\022#\n\005error\030\001 \001"
+          + "(\0132\022.google.rpc.StatusH\000\022]\n\031suggest_arti"
+          + "cles_response\030\002 \001(\01328.google.cloud.dialo"
+          + "gflow.v2beta1.SuggestArticlesResponseH\000\022"
+          + "b\n\034suggest_faq_answers_response\030\003 \001(\0132:."
+          + "google.cloud.dialogflow.v2beta1.SuggestF"
+          + "aqAnswersResponseH\000\022f\n\036suggest_smart_rep"
+          + "lies_response\030\004 \001(\0132<.google.cloud.dialo"
+          + "gflow.v2beta1.SuggestSmartRepliesRespons"
+          + "eH\000B\025\n\023suggestion_response\"\217\002\n\026SuggestAr"
+          + "ticlesRequest\022=\n\006parent\030\001 \001(\tB-\340A\002\372A\'\n%d"
+          + "ialogflow.googleapis.com/Participant\022A\n\016"
+          + "latest_message\030\002 \001(\tB)\340A\001\372A#\n!dialogflow"
+          + ".googleapis.com/Message\022\031\n\014context_size\030"
+          + "\003 \001(\005B\003\340A\001\022X\n\023assist_query_params\030\004 \001(\0132"
+          + "6.google.cloud.dialogflow.v2beta1.Assist"
+          + "QueryParametersB\003\340A\001\"\220\001\n\027SuggestArticles"
+          + "Response\022G\n\017article_answers\030\001 \003(\0132..goog"
+          + "le.cloud.dialogflow.v2beta1.ArticleAnswe"
+          + "r\022\026\n\016latest_message\030\002 \001(\t\022\024\n\014context_siz"
+          + "e\030\003 \001(\005\"\221\002\n\030SuggestFaqAnswersRequest\022=\n\006"
+          + "parent\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googlea"
+          + "pis.com/Participant\022A\n\016latest_message\030\002 "
+          + "\001(\tB)\340A\001\372A#\n!dialogflow.googleapis.com/M"
+          + "essage\022\031\n\014context_size\030\003 \001(\005B\003\340A\001\022X\n\023ass"
+          + "ist_query_params\030\004 \001(\01326.google.cloud.di"
+          + "alogflow.v2beta1.AssistQueryParametersB\003"
+          + "\340A\001\"\212\001\n\031SuggestFaqAnswersResponse\022?\n\013faq"
+          + "_answers\030\001 \003(\0132*.google.cloud.dialogflow"
+          + ".v2beta1.FaqAnswer\022\026\n\016latest_message\030\002 \001"
+          + "(\t\022\024\n\014context_size\030\003 \001(\005\"\371\001\n\032SuggestSmar"
+          + "tRepliesRequest\022=\n\006parent\030\001 \001(\tB-\340A\002\372A\'\n"
+          + "%dialogflow.googleapis.com/Participant\022F"
+          + "\n\022current_text_input\030\004 \001(\0132*.google.clou"
+          + "d.dialogflow.v2beta1.TextInput\022>\n\016latest"
+          + "_message\030\002 \001(\tB&\372A#\n!dialogflow.googleap"
+          + "is.com/Message\022\024\n\014context_size\030\003 \001(\005\"\303\001\n"
+          + "\033SuggestSmartRepliesResponse\022N\n\023smart_re"
+          + "ply_answers\030\001 \003(\01321.google.cloud.dialogf"
+          + "low.v2beta1.SmartReplyAnswer\022>\n\016latest_m"
+          + "essage\030\002 \001(\tB&\372A#\n!dialogflow.googleapis"
+          + ".com/Message\022\024\n\014context_size\030\003 \001(\005\"\304\005\n\nS"
+          + "uggestion\022\014\n\004name\030\001 \001(\t\022E\n\010articles\030\002 \003("
+          + "\01323.google.cloud.dialogflow.v2beta1.Sugg"
+          + "estion.Article\022J\n\013faq_answers\030\004 \003(\01325.go"
+          + "ogle.cloud.dialogflow.v2beta1.Suggestion"
+          + ".FaqAnswer\022/\n\013create_time\030\005 \001(\0132\032.google"
+          + ".protobuf.Timestamp\022\026\n\016latest_message\030\007 "
+          + "\001(\t\032\324\001\n\007Article\022\r\n\005title\030\001 \001(\t\022\013\n\003uri\030\002 "
+          + "\001(\t\022\020\n\010snippets\030\003 \003(\t\022S\n\010metadata\030\005 \003(\0132"
+          + "A.google.cloud.dialogflow.v2beta1.Sugges"
+          + "tion.Article.MetadataEntry\022\025\n\ranswer_rec"
+          + "ord\030\006 \001(\t\032/\n\rMetadataEntry\022\013\n\003key\030\001 \001(\t\022"
+          + "\r\n\005value\030\002 \001(\t:\0028\001\032\360\001\n\tFaqAnswer\022\016\n\006answ"
+          + "er\030\001 \001(\t\022\022\n\nconfidence\030\002 \001(\002\022\020\n\010question"
+          + "\030\003 \001(\t\022\016\n\006source\030\004 \001(\t\022U\n\010metadata\030\005 \003(\013"
+          + "2C.google.cloud.dialogflow.v2beta1.Sugge"
+          + "stion.FaqAnswer.MetadataEntry\022\025\n\ranswer_"
+          + "record\030\006 \001(\t\032/\n\rMetadataEntry\022\013\n\003key\030\001 \001"
+          + "(\t\022\r\n\005value\030\002 \001(\t:\0028\001:\002\030\001\"c\n\026ListSuggest"
+          + "ionsRequest\022\016\n\006parent\030\001 \001(\t\022\021\n\tpage_size"
+          + "\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006filter\030\004 \001"
+          + "(\t:\002\030\001\"x\n\027ListSuggestionsResponse\022@\n\013sug"
+          + "gestions\030\001 \003(\0132+.google.cloud.dialogflow"
+          + ".v2beta1.Suggestion\022\027\n\017next_page_token\030\002"
+          + " \001(\t:\002\030\001\"\\\n\030CompileSuggestionRequest\022\016\n\006"
+          + "parent\030\001 \001(\t\022\026\n\016latest_message\030\002 \001(\t\022\024\n\014"
+          + "context_size\030\003 \001(\005:\002\030\001\"\216\001\n\031CompileSugges"
+          + "tionResponse\022?\n\nsuggestion\030\001 \001(\0132+.googl"
+          + "e.cloud.dialogflow.v2beta1.Suggestion\022\026\n"
           + "\016latest_message\030\002 \001(\t\022\024\n\014context_size\030\003 "
-          + "\001(\005\"\371\001\n\032SuggestSmartRepliesRequest\022=\n\006pa"
-          + "rent\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googleapi"
-          + "s.com/Participant\022F\n\022current_text_input\030"
-          + "\004 \001(\0132*.google.cloud.dialogflow.v2beta1."
-          + "TextInput\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!"
-          + "dialogflow.googleapis.com/Message\022\024\n\014con"
-          + "text_size\030\003 \001(\005\"\303\001\n\033SuggestSmartRepliesR"
-          + "esponse\022N\n\023smart_reply_answers\030\001 \003(\01321.g"
-          + "oogle.cloud.dialogflow.v2beta1.SmartRepl"
-          + "yAnswer\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!di"
-          + "alogflow.googleapis.com/Message\022\024\n\014conte"
-          + "xt_size\030\003 \001(\005\"\304\005\n\nSuggestion\022\014\n\004name\030\001 \001"
-          + "(\t\022E\n\010articles\030\002 \003(\01323.google.cloud.dial"
-          + "ogflow.v2beta1.Suggestion.Article\022J\n\013faq"
-          + "_answers\030\004 \003(\01325.google.cloud.dialogflow"
-          + ".v2beta1.Suggestion.FaqAnswer\022/\n\013create_"
-          + "time\030\005 \001(\0132\032.google.protobuf.Timestamp\022\026"
-          + "\n\016latest_message\030\007 \001(\t\032\324\001\n\007Article\022\r\n\005ti"
-          + "tle\030\001 \001(\t\022\013\n\003uri\030\002 \001(\t\022\020\n\010snippets\030\003 \003(\t"
-          + "\022S\n\010metadata\030\005 \003(\0132A.google.cloud.dialog"
-          + "flow.v2beta1.Suggestion.Article.Metadata"
-          + "Entry\022\025\n\ranswer_record\030\006 \001(\t\032/\n\rMetadata"
-          + "Entry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\032\360\001"
-          + "\n\tFaqAnswer\022\016\n\006answer\030\001 \001(\t\022\022\n\nconfidenc"
-          + "e\030\002 \001(\002\022\020\n\010question\030\003 \001(\t\022\016\n\006source\030\004 \001("
-          + "\t\022U\n\010metadata\030\005 \003(\0132C.google.cloud.dialo"
-          + "gflow.v2beta1.Suggestion.FaqAnswer.Metad"
-          + "ataEntry\022\025\n\ranswer_record\030\006 \001(\t\032/\n\rMetad"
-          + "ataEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001"
-          + ":\002\030\001\"c\n\026ListSuggestionsRequest\022\016\n\006parent"
-          + "\030\001 \001(\t\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_token\030"
-          + "\003 \001(\t\022\016\n\006filter\030\004 \001(\t:\002\030\001\"x\n\027ListSuggest"
-          + "ionsResponse\022@\n\013suggestions\030\001 \003(\0132+.goog"
-          + "le.cloud.dialogflow.v2beta1.Suggestion\022\027"
-          + "\n\017next_page_token\030\002 \001(\t:\002\030\001\"\\\n\030CompileSu"
-          + "ggestionRequest\022\016\n\006parent\030\001 \001(\t\022\026\n\016lates"
-          + "t_message\030\002 \001(\t\022\024\n\014context_size\030\003 \001(\005:\002\030"
-          + "\001\"\216\001\n\031CompileSuggestionResponse\022?\n\nsugge"
-          + "stion\030\001 \001(\0132+.google.cloud.dialogflow.v2"
-          + "beta1.Suggestion\022\026\n\016latest_message\030\002 \001(\t"
-          + "\022\024\n\014context_size\030\003 \001(\005:\002\030\001\"\356\004\n\017ResponseM"
-          + "essage\022E\n\004text\030\001 \001(\01325.google.cloud.dial"
-          + "ogflow.v2beta1.ResponseMessage.TextH\000\022*\n"
-          + "\007payload\030\002 \001(\0132\027.google.protobuf.StructH"
-          + "\000\022_\n\022live_agent_handoff\030\003 \001(\0132A.google.c"
-          + "loud.dialogflow.v2beta1.ResponseMessage."
-          + "LiveAgentHandoffH\000\022Z\n\017end_interaction\030\004 "
-          + "\001(\0132?.google.cloud.dialogflow.v2beta1.Re"
-          + "sponseMessage.EndInteractionH\000\022i\n\027teleph"
-          + "ony_transfer_call\030\006 \001(\0132F.google.cloud.d"
-          + "ialogflow.v2beta1.ResponseMessage.Teleph"
-          + "onyTransferCallH\000\032\024\n\004Text\022\014\n\004text\030\001 \003(\t\032"
-          + "=\n\020LiveAgentHandoff\022)\n\010metadata\030\001 \001(\0132\027."
-          + "google.protobuf.Struct\032\020\n\016EndInteraction"
-          + "\032N\n\025TelephonyTransferCall\022\026\n\014phone_numbe"
-          + "r\030\001 \001(\tH\000\022\021\n\007sip_uri\030\002 \001(\tH\000B\n\n\010endpoint"
-          + "B\t\n\007message2\310\031\n\014Participants\022\271\002\n\021CreateP"
-          + "articipant\0229.google.cloud.dialogflow.v2b"
-          + "eta1.CreateParticipantRequest\032,.google.c"
-          + "loud.dialogflow.v2beta1.Participant\"\272\001\202\323"
-          + "\344\223\002\236\001\"9/v2beta1/{parent=projects/*/conve"
-          + "rsations/*}/participants:\013participantZT\""
-          + "E/v2beta1/{parent=projects/*/locations/*"
-          + "/conversations/*}/participants:\013particip"
-          + "ant\332A\022parent,participant\022\213\002\n\016GetParticip"
-          + "ant\0226.google.cloud.dialogflow.v2beta1.Ge"
-          + "tParticipantRequest\032,.google.cloud.dialo"
-          + "gflow.v2beta1.Participant\"\222\001\202\323\344\223\002\204\001\0229/v2"
-          + "beta1/{name=projects/*/conversations/*/p"
-          + "articipants/*}ZG\022E/v2beta1/{name=project"
-          + "s/*/locations/*/conversations/*/particip"
-          + "ants/*}\332A\004name\022\236\002\n\020ListParticipants\0228.go"
-          + "ogle.cloud.dialogflow.v2beta1.ListPartic"
-          + "ipantsRequest\0329.google.cloud.dialogflow."
-          + "v2beta1.ListParticipantsResponse\"\224\001\202\323\344\223\002"
-          + "\204\001\0229/v2beta1/{parent=projects/*/conversa"
-          + "tions/*}/participantsZG\022E/v2beta1/{paren"
-          + "t=projects/*/locations/*/conversations/*"
-          + "}/participants\332A\006parent\022\326\002\n\021UpdatePartic"
-          + "ipant\0229.google.cloud.dialogflow.v2beta1."
-          + "UpdateParticipantRequest\032,.google.cloud."
-          + "dialogflow.v2beta1.Participant\"\327\001\202\323\344\223\002\266\001"
-          + "2E/v2beta1/{participant.name=projects/*/"
-          + "conversations/*/participants/*}:\013partici"
-          + "pantZ`2Q/v2beta1/{participant.name=proje"
-          + "cts/*/locations/*/conversations/*/partic"
-          + "ipants/*}:\013participant\332A\027participant,upd"
-          + "ate_mask\022\364\002\n\016AnalyzeContent\0226.google.clo"
-          + "ud.dialogflow.v2beta1.AnalyzeContentRequ"
-          + "est\0327.google.cloud.dialogflow.v2beta1.An"
-          + "alyzeContentResponse\"\360\001\202\323\344\223\002\266\001\"O/v2beta1"
-          + "/{participant=projects/*/conversations/*"
-          + "/participants/*}:analyzeContent:\001*Z`\"[/v"
-          + "2beta1/{participant=projects/*/locations"
+          + "\001(\005:\002\030\001\"\203\007\n\017ResponseMessage\022E\n\004text\030\001 \001("
+          + "\01325.google.cloud.dialogflow.v2beta1.Resp"
+          + "onseMessage.TextH\000\022*\n\007payload\030\002 \001(\0132\027.go"
+          + "ogle.protobuf.StructH\000\022_\n\022live_agent_han"
+          + "doff\030\003 \001(\0132A.google.cloud.dialogflow.v2b"
+          + "eta1.ResponseMessage.LiveAgentHandoffH\000\022"
+          + "Z\n\017end_interaction\030\004 \001(\0132?.google.cloud."
+          + "dialogflow.v2beta1.ResponseMessage.EndIn"
+          + "teractionH\000\022R\n\013mixed_audio\030\005 \001(\0132;.googl"
+          + "e.cloud.dialogflow.v2beta1.ResponseMessa"
+          + "ge.MixedAudioH\000\022i\n\027telephony_transfer_ca"
+          + "ll\030\006 \001(\0132F.google.cloud.dialogflow.v2bet"
+          + "a1.ResponseMessage.TelephonyTransferCall"
+          + "H\000\032\024\n\004Text\022\014\n\004text\030\001 \003(\t\032=\n\020LiveAgentHan"
+          + "doff\022)\n\010metadata\030\001 \001(\0132\027.google.protobuf"
+          + ".Struct\032\020\n\016EndInteraction\032\276\001\n\nMixedAudio"
+          + "\022U\n\010segments\030\001 \003(\0132C.google.cloud.dialog"
+          + "flow.v2beta1.ResponseMessage.MixedAudio."
+          + "Segment\032Y\n\007Segment\022\017\n\005audio\030\001 \001(\014H\000\022\r\n\003u"
+          + "ri\030\002 \001(\tH\000\022#\n\033allow_playback_interruptio"
+          + "n\030\003 \001(\010B\t\n\007content\032N\n\025TelephonyTransferC"
+          + "all\022\026\n\014phone_number\030\001 \001(\tH\000\022\021\n\007sip_uri\030\002"
+          + " \001(\tH\000B\n\n\010endpointB\t\n\007message2\355\032\n\014Partic"
+          + "ipants\022\271\002\n\021CreateParticipant\0229.google.cl"
+          + "oud.dialogflow.v2beta1.CreateParticipant"
+          + "Request\032,.google.cloud.dialogflow.v2beta"
+          + "1.Participant\"\272\001\202\323\344\223\002\236\001\"9/v2beta1/{paren"
+          + "t=projects/*/conversations/*}/participan"
+          + "ts:\013participantZT\"E/v2beta1/{parent=proj"
+          + "ects/*/locations/*/conversations/*}/part"
+          + "icipants:\013participant\332A\022parent,participa"
+          + "nt\022\213\002\n\016GetParticipant\0226.google.cloud.dia"
+          + "logflow.v2beta1.GetParticipantRequest\032,."
+          + "google.cloud.dialogflow.v2beta1.Particip"
+          + "ant\"\222\001\202\323\344\223\002\204\001\0229/v2beta1/{name=projects/*"
+          + "/conversations/*/participants/*}ZG\022E/v2b"
+          + "eta1/{name=projects/*/locations/*/conver"
+          + "sations/*/participants/*}\332A\004name\022\236\002\n\020Lis"
+          + "tParticipants\0228.google.cloud.dialogflow."
+          + "v2beta1.ListParticipantsRequest\0329.google"
+          + ".cloud.dialogflow.v2beta1.ListParticipan"
+          + "tsResponse\"\224\001\202\323\344\223\002\204\001\0229/v2beta1/{parent=p"
+          + "rojects/*/conversations/*}/participantsZ"
+          + "G\022E/v2beta1/{parent=projects/*/locations"
+          + "/*/conversations/*}/participants\332A\006paren"
+          + "t\022\326\002\n\021UpdateParticipant\0229.google.cloud.d"
+          + "ialogflow.v2beta1.UpdateParticipantReque"
+          + "st\032,.google.cloud.dialogflow.v2beta1.Par"
+          + "ticipant\"\327\001\202\323\344\223\002\266\0012E/v2beta1/{participan"
+          + "t.name=projects/*/conversations/*/partic"
+          + "ipants/*}:\013participantZ`2Q/v2beta1/{part"
+          + "icipant.name=projects/*/locations/*/conv"
+          + "ersations/*/participants/*}:\013participant"
+          + "\332A\027participant,update_mask\022\364\002\n\016AnalyzeCo"
+          + "ntent\0226.google.cloud.dialogflow.v2beta1."
+          + "AnalyzeContentRequest\0327.google.cloud.dia"
+          + "logflow.v2beta1.AnalyzeContentResponse\"\360"
+          + "\001\202\323\344\223\002\266\001\"O/v2beta1/{participant=projects"
           + "/*/conversations/*/participants/*}:analy"
-          + "zeContent:\001*\332A\026participant,text_input\332A\027"
-          + "participant,event_input\022\335\002\n\017SuggestArtic"
-          + "les\0227.google.cloud.dialogflow.v2beta1.Su"
-          + "ggestArticlesRequest\0328.google.cloud.dial"
-          + "ogflow.v2beta1.SuggestArticlesResponse\"\326"
-          + "\001\202\323\344\223\002\306\001\"W/v2beta1/{parent=projects/*/co"
-          + "nversations/*/participants/*}/suggestion"
-          + "s:suggestArticles:\001*Zh\"c/v2beta1/{parent"
-          + "=projects/*/locations/*/conversations/*/"
-          + "participants/*}/suggestions:suggestArtic"
-          + "les:\001*\332A\006parent\022\347\002\n\021SuggestFaqAnswers\0229."
-          + "google.cloud.dialogflow.v2beta1.SuggestF"
-          + "aqAnswersRequest\032:.google.cloud.dialogfl"
-          + "ow.v2beta1.SuggestFaqAnswersResponse\"\332\001\202"
-          + "\323\344\223\002\312\001\"Y/v2beta1/{parent=projects/*/conv"
-          + "ersations/*/participants/*}/suggestions:"
-          + "suggestFaqAnswers:\001*Zj\"e/v2beta1/{parent"
-          + "=projects/*/locations/*/conversations/*/"
-          + "participants/*}/suggestions:suggestFaqAn"
-          + "swers:\001*\332A\006parent\022\361\002\n\023SuggestSmartReplie"
-          + "s\022;.google.cloud.dialogflow.v2beta1.Sugg"
-          + "estSmartRepliesRequest\032<.google.cloud.di"
-          + "alogflow.v2beta1.SuggestSmartRepliesResp"
-          + "onse\"\336\001\202\323\344\223\002\316\001\"[/v2beta1/{parent=project"
-          + "s/*/conversations/*/participants/*}/sugg"
-          + "estions:suggestSmartReplies:\001*Zl\"g/v2bet"
-          + "a1/{parent=projects/*/locations/*/conver"
-          + "sations/*/participants/*}/suggestions:su"
-          + "ggestSmartReplies:\001*\332A\006parent\022\330\001\n\017ListSu"
-          + "ggestions\0227.google.cloud.dialogflow.v2be"
-          + "ta1.ListSuggestionsRequest\0328.google.clou"
-          + "d.dialogflow.v2beta1.ListSuggestionsResp"
-          + "onse\"R\210\002\001\202\323\344\223\002I\022G/v2beta1/{parent=projec"
-          + "ts/*/conversations/*/participants/*}/sug"
-          + "gestions\022\351\001\n\021CompileSuggestion\0229.google."
-          + "cloud.dialogflow.v2beta1.CompileSuggesti"
-          + "onRequest\032:.google.cloud.dialogflow.v2be"
-          + "ta1.CompileSuggestionResponse\"]\210\002\001\202\323\344\223\002T"
-          + "\"O/v2beta1/{parent=projects/*/conversati"
-          + "ons/*/participants/*}/suggestions:compil"
-          + "e:\001*\032x\312A\031dialogflow.googleapis.com\322AYhtt"
-          + "ps://www.googleapis.com/auth/cloud-platf"
-          + "orm,https://www.googleapis.com/auth/dial"
-          + "ogflowB\256\001\n#com.google.cloud.dialogflow.v"
-          + "2beta1B\020ParticipantProtoP\001ZIgoogle.golan"
-          + "g.org/genproto/googleapis/cloud/dialogfl"
-          + "ow/v2beta1;dialogflow\370\001\001\242\002\002DF\252\002\037Google.C"
-          + "loud.Dialogflow.V2beta1b\006proto3"
+          + "zeContent:\001*Z`\"[/v2beta1/{participant=pr"
+          + "ojects/*/locations/*/conversations/*/par"
+          + "ticipants/*}:analyzeContent:\001*\332A\026partici"
+          + "pant,text_input\332A\027participant,event_inpu"
+          + "t\022\242\001\n\027StreamingAnalyzeContent\022?.google.c"
+          + "loud.dialogflow.v2beta1.StreamingAnalyze"
+          + "ContentRequest\032@.google.cloud.dialogflow"
+          + ".v2beta1.StreamingAnalyzeContentResponse"
+          + "\"\000(\0010\001\022\335\002\n\017SuggestArticles\0227.google.clou"
+          + "d.dialogflow.v2beta1.SuggestArticlesRequ"
+          + "est\0328.google.cloud.dialogflow.v2beta1.Su"
+          + "ggestArticlesResponse\"\326\001\202\323\344\223\002\306\001\"W/v2beta"
+          + "1/{parent=projects/*/conversations/*/par"
+          + "ticipants/*}/suggestions:suggestArticles"
+          + ":\001*Zh\"c/v2beta1/{parent=projects/*/locat"
+          + "ions/*/conversations/*/participants/*}/s"
+          + "uggestions:suggestArticles:\001*\332A\006parent\022\347"
+          + "\002\n\021SuggestFaqAnswers\0229.google.cloud.dial"
+          + "ogflow.v2beta1.SuggestFaqAnswersRequest\032"
+          + ":.google.cloud.dialogflow.v2beta1.Sugges"
+          + "tFaqAnswersResponse\"\332\001\202\323\344\223\002\312\001\"Y/v2beta1/"
+          + "{parent=projects/*/conversations/*/parti"
+          + "cipants/*}/suggestions:suggestFaqAnswers"
+          + ":\001*Zj\"e/v2beta1/{parent=projects/*/locat"
+          + "ions/*/conversations/*/participants/*}/s"
+          + "uggestions:suggestFaqAnswers:\001*\332A\006parent"
+          + "\022\361\002\n\023SuggestSmartReplies\022;.google.cloud."
+          + "dialogflow.v2beta1.SuggestSmartRepliesRe"
+          + "quest\032<.google.cloud.dialogflow.v2beta1."
+          + "SuggestSmartRepliesResponse\"\336\001\202\323\344\223\002\316\001\"[/"
+          + "v2beta1/{parent=projects/*/conversations"
+          + "/*/participants/*}/suggestions:suggestSm"
+          + "artReplies:\001*Zl\"g/v2beta1/{parent=projec"
+          + "ts/*/locations/*/conversations/*/partici"
+          + "pants/*}/suggestions:suggestSmartReplies"
+          + ":\001*\332A\006parent\022\330\001\n\017ListSuggestions\0227.googl"
+          + "e.cloud.dialogflow.v2beta1.ListSuggestio"
+          + "nsRequest\0328.google.cloud.dialogflow.v2be"
+          + "ta1.ListSuggestionsResponse\"R\210\002\001\202\323\344\223\002I\022G"
+          + "/v2beta1/{parent=projects/*/conversation"
+          + "s/*/participants/*}/suggestions\022\351\001\n\021Comp"
+          + "ileSuggestion\0229.google.cloud.dialogflow."
+          + "v2beta1.CompileSuggestionRequest\032:.googl"
+          + "e.cloud.dialogflow.v2beta1.CompileSugges"
+          + "tionResponse\"]\210\002\001\202\323\344\223\002T\"O/v2beta1/{paren"
+          + "t=projects/*/conversations/*/participant"
+          + "s/*}/suggestions:compile:\001*\032x\312A\031dialogfl"
+          + "ow.googleapis.com\322AYhttps://www.googleap"
+          + "is.com/auth/cloud-platform,https://www.g"
+          + "oogleapis.com/auth/dialogflowB\256\001\n#com.go"
+          + "ogle.cloud.dialogflow.v2beta1B\020Participa"
+          + "ntProtoP\001ZIgoogle.golang.org/genproto/go"
+          + "ogleapis/cloud/dialogflow/v2beta1;dialog"
+          + "flow\370\001\001\242\002\002DF\252\002\037Google.Cloud.Dialogflow.V"
+          + "2beta1b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -675,6 +742,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ReplyAudioConfig",
               "QueryParams",
               "AssistQueryParams",
+              "CxParameters",
               "MessageSendTime",
               "RequestId",
               "Input",
@@ -701,8 +769,51 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "EndUserSuggestionResults",
               "DtmfParameters",
             });
-    internal_static_google_cloud_dialogflow_v2beta1_AnnotatedMessagePart_descriptor =
+    internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_descriptor =
         getDescriptor().getMessageTypes().get(14);
+    internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_cloud_dialogflow_v2beta1_InputTextConfig_descriptor,
+            new java.lang.String[] {
+              "LanguageCode",
+            });
+    internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_descriptor =
+        getDescriptor().getMessageTypes().get(15);
+    internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_descriptor,
+            new java.lang.String[] {
+              "Participant",
+              "AudioConfig",
+              "TextConfig",
+              "ReplyAudioConfig",
+              "InputAudio",
+              "InputText",
+              "InputDtmf",
+              "QueryParams",
+              "AssistQueryParams",
+              "CxParameters",
+              "EnablePartialAutomatedAgentReply",
+              "Config",
+              "Input",
+            });
+    internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_descriptor =
+        getDescriptor().getMessageTypes().get(16);
+    internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_descriptor,
+            new java.lang.String[] {
+              "RecognitionResult",
+              "ReplyText",
+              "ReplyAudio",
+              "AutomatedAgentReply",
+              "Message",
+              "HumanAgentSuggestionResults",
+              "EndUserSuggestionResults",
+              "DtmfParameters",
+            });
+    internal_static_google_cloud_dialogflow_v2beta1_AnnotatedMessagePart_descriptor =
+        getDescriptor().getMessageTypes().get(17);
     internal_static_google_cloud_dialogflow_v2beta1_AnnotatedMessagePart_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_AnnotatedMessagePart_descriptor,
@@ -710,7 +821,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Text", "EntityType", "FormattedValue",
             });
     internal_static_google_cloud_dialogflow_v2beta1_MessageAnnotation_descriptor =
-        getDescriptor().getMessageTypes().get(15);
+        getDescriptor().getMessageTypes().get(18);
     internal_static_google_cloud_dialogflow_v2beta1_MessageAnnotation_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_MessageAnnotation_descriptor,
@@ -718,7 +829,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parts", "ContainEntities",
             });
     internal_static_google_cloud_dialogflow_v2beta1_ArticleAnswer_descriptor =
-        getDescriptor().getMessageTypes().get(16);
+        getDescriptor().getMessageTypes().get(19);
     internal_static_google_cloud_dialogflow_v2beta1_ArticleAnswer_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_ArticleAnswer_descriptor,
@@ -736,7 +847,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Key", "Value",
             });
     internal_static_google_cloud_dialogflow_v2beta1_FaqAnswer_descriptor =
-        getDescriptor().getMessageTypes().get(17);
+        getDescriptor().getMessageTypes().get(20);
     internal_static_google_cloud_dialogflow_v2beta1_FaqAnswer_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_FaqAnswer_descriptor,
@@ -754,7 +865,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Key", "Value",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SmartReplyAnswer_descriptor =
-        getDescriptor().getMessageTypes().get(18);
+        getDescriptor().getMessageTypes().get(21);
     internal_static_google_cloud_dialogflow_v2beta1_SmartReplyAnswer_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SmartReplyAnswer_descriptor,
@@ -762,7 +873,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Reply", "Confidence", "AnswerRecord",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SuggestionResult_descriptor =
-        getDescriptor().getMessageTypes().get(19);
+        getDescriptor().getMessageTypes().get(22);
     internal_static_google_cloud_dialogflow_v2beta1_SuggestionResult_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SuggestionResult_descriptor,
@@ -774,7 +885,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "SuggestionResponse",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SuggestArticlesRequest_descriptor =
-        getDescriptor().getMessageTypes().get(20);
+        getDescriptor().getMessageTypes().get(23);
     internal_static_google_cloud_dialogflow_v2beta1_SuggestArticlesRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SuggestArticlesRequest_descriptor,
@@ -782,7 +893,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parent", "LatestMessage", "ContextSize", "AssistQueryParams",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SuggestArticlesResponse_descriptor =
-        getDescriptor().getMessageTypes().get(21);
+        getDescriptor().getMessageTypes().get(24);
     internal_static_google_cloud_dialogflow_v2beta1_SuggestArticlesResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SuggestArticlesResponse_descriptor,
@@ -790,7 +901,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "ArticleAnswers", "LatestMessage", "ContextSize",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SuggestFaqAnswersRequest_descriptor =
-        getDescriptor().getMessageTypes().get(22);
+        getDescriptor().getMessageTypes().get(25);
     internal_static_google_cloud_dialogflow_v2beta1_SuggestFaqAnswersRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SuggestFaqAnswersRequest_descriptor,
@@ -798,7 +909,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parent", "LatestMessage", "ContextSize", "AssistQueryParams",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SuggestFaqAnswersResponse_descriptor =
-        getDescriptor().getMessageTypes().get(23);
+        getDescriptor().getMessageTypes().get(26);
     internal_static_google_cloud_dialogflow_v2beta1_SuggestFaqAnswersResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SuggestFaqAnswersResponse_descriptor,
@@ -806,7 +917,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "FaqAnswers", "LatestMessage", "ContextSize",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SuggestSmartRepliesRequest_descriptor =
-        getDescriptor().getMessageTypes().get(24);
+        getDescriptor().getMessageTypes().get(27);
     internal_static_google_cloud_dialogflow_v2beta1_SuggestSmartRepliesRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SuggestSmartRepliesRequest_descriptor,
@@ -814,7 +925,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parent", "CurrentTextInput", "LatestMessage", "ContextSize",
             });
     internal_static_google_cloud_dialogflow_v2beta1_SuggestSmartRepliesResponse_descriptor =
-        getDescriptor().getMessageTypes().get(25);
+        getDescriptor().getMessageTypes().get(28);
     internal_static_google_cloud_dialogflow_v2beta1_SuggestSmartRepliesResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_SuggestSmartRepliesResponse_descriptor,
@@ -822,7 +933,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "SmartReplyAnswers", "LatestMessage", "ContextSize",
             });
     internal_static_google_cloud_dialogflow_v2beta1_Suggestion_descriptor =
-        getDescriptor().getMessageTypes().get(26);
+        getDescriptor().getMessageTypes().get(29);
     internal_static_google_cloud_dialogflow_v2beta1_Suggestion_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_Suggestion_descriptor,
@@ -870,7 +981,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Key", "Value",
             });
     internal_static_google_cloud_dialogflow_v2beta1_ListSuggestionsRequest_descriptor =
-        getDescriptor().getMessageTypes().get(27);
+        getDescriptor().getMessageTypes().get(30);
     internal_static_google_cloud_dialogflow_v2beta1_ListSuggestionsRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_ListSuggestionsRequest_descriptor,
@@ -878,7 +989,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parent", "PageSize", "PageToken", "Filter",
             });
     internal_static_google_cloud_dialogflow_v2beta1_ListSuggestionsResponse_descriptor =
-        getDescriptor().getMessageTypes().get(28);
+        getDescriptor().getMessageTypes().get(31);
     internal_static_google_cloud_dialogflow_v2beta1_ListSuggestionsResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_ListSuggestionsResponse_descriptor,
@@ -886,7 +997,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Suggestions", "NextPageToken",
             });
     internal_static_google_cloud_dialogflow_v2beta1_CompileSuggestionRequest_descriptor =
-        getDescriptor().getMessageTypes().get(29);
+        getDescriptor().getMessageTypes().get(32);
     internal_static_google_cloud_dialogflow_v2beta1_CompileSuggestionRequest_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_CompileSuggestionRequest_descriptor,
@@ -894,7 +1005,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Parent", "LatestMessage", "ContextSize",
             });
     internal_static_google_cloud_dialogflow_v2beta1_CompileSuggestionResponse_descriptor =
-        getDescriptor().getMessageTypes().get(30);
+        getDescriptor().getMessageTypes().get(33);
     internal_static_google_cloud_dialogflow_v2beta1_CompileSuggestionResponse_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_CompileSuggestionResponse_descriptor,
@@ -902,7 +1013,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Suggestion", "LatestMessage", "ContextSize",
             });
     internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_descriptor =
-        getDescriptor().getMessageTypes().get(31);
+        getDescriptor().getMessageTypes().get(34);
     internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_descriptor,
@@ -911,6 +1022,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Payload",
               "LiveAgentHandoff",
               "EndInteraction",
+              "MixedAudio",
               "TelephonyTransferCall",
               "Message",
             });
@@ -942,10 +1054,30 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_EndInteraction_descriptor,
             new java.lang.String[] {});
-    internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_TelephonyTransferCall_descriptor =
+    internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_descriptor =
         internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_descriptor
             .getNestedTypes()
             .get(3);
+    internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_descriptor,
+            new java.lang.String[] {
+              "Segments",
+            });
+    internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_descriptor =
+        internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_descriptor
+            .getNestedTypes()
+            .get(0);
+    internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_descriptor,
+            new java.lang.String[] {
+              "Audio", "Uri", "AllowPlaybackInterruption", "Content",
+            });
+    internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_TelephonyTransferCall_descriptor =
+        internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_descriptor
+            .getNestedTypes()
+            .get(4);
     internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_TelephonyTransferCall_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_TelephonyTransferCall_descriptor,
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessage.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessage.java
index 109380cdf..37367a01f 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessage.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessage.java
@@ -146,6 +146,27 @@ private ResponseMessage(
               messageCase_ = 4;
               break;
             }
+          case 42:
+            {
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder subBuilder =
+                  null;
+              if (messageCase_ == 5) {
+                subBuilder =
+                    ((com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_)
+                        .toBuilder();
+              }
+              message_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(
+                    (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_);
+                message_ = subBuilder.buildPartial();
+              }
+              messageCase_ = 5;
+              break;
+            }
           case 50:
             {
               com.google.cloud.dialogflow.v2beta1.ResponseMessage.TelephonyTransferCall.Builder
@@ -2148,45 +2169,2275 @@ public Builder mergeFrom(com.google.protobuf.Message other) {
           return mergeFrom(
               (com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction) other);
         } else {
-          super.mergeFrom(other);
-          return this;
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction other) {
+        if (other
+            == com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
+                .getDefaultInstance()) return this;
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage =
+              (com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction)
+                  e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+      // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction)
+    }
+
+    // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction)
+    private static final com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
+        DEFAULT_INSTANCE;
+
+    static {
+      DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction();
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
+        getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<EndInteraction> PARSER =
+        new com.google.protobuf.AbstractParser<EndInteraction>() {
+          @java.lang.Override
+          public EndInteraction parsePartialFrom(
+              com.google.protobuf.CodedInputStream input,
+              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+              throws com.google.protobuf.InvalidProtocolBufferException {
+            return new EndInteraction(input, extensionRegistry);
+          }
+        };
+
+    public static com.google.protobuf.Parser<EndInteraction> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<EndInteraction> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
+        getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+  }
+
+  public interface MixedAudioOrBuilder
+      extends
+      // @@protoc_insertion_point(interface_extends:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    java.util.List<com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>
+        getSegmentsList();
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment getSegments(int index);
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    int getSegmentsCount();
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    java.util.List<
+            ? extends
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder>
+        getSegmentsOrBuilderList();
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder
+        getSegmentsOrBuilder(int index);
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Represents an audio message that is composed of both segments
+   * synthesized from the Dialogflow agent prompts and ones hosted externally
+   * at the specified URIs.
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio}
+   */
+  public static final class MixedAudio extends com.google.protobuf.GeneratedMessageV3
+      implements
+      // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio)
+      MixedAudioOrBuilder {
+    private static final long serialVersionUID = 0L;
+    // Use MixedAudio.newBuilder() to construct.
+    private MixedAudio(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+
+    private MixedAudio() {
+      segments_ = java.util.Collections.emptyList();
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+      return new MixedAudio();
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+      return this.unknownFields;
+    }
+
+    private MixedAudio(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10:
+              {
+                if (!((mutable_bitField0_ & 0x00000001) != 0)) {
+                  segments_ =
+                      new java.util.ArrayList<
+                          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>();
+                  mutable_bitField0_ |= 0x00000001;
+                }
+                segments_.add(
+                    input.readMessage(
+                        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+                            .parser(),
+                        extensionRegistry));
+                break;
+              }
+            default:
+              {
+                if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                  done = true;
+                }
+                break;
+              }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+      } finally {
+        if (((mutable_bitField0_ & 0x00000001) != 0)) {
+          segments_ = java.util.Collections.unmodifiableList(segments_);
+        }
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.class,
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder.class);
+    }
+
+    public interface SegmentOrBuilder
+        extends
+        // @@protoc_insertion_point(interface_extends:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment)
+        com.google.protobuf.MessageOrBuilder {
+
+      /**
+       *
+       *
+       * <pre>
+       * Raw audio synthesized from the Dialogflow agent's response using
+       * the output config specified in the request.
+       * </pre>
+       *
+       * <code>bytes audio = 1;</code>
+       *
+       * @return Whether the audio field is set.
+       */
+      boolean hasAudio();
+      /**
+       *
+       *
+       * <pre>
+       * Raw audio synthesized from the Dialogflow agent's response using
+       * the output config specified in the request.
+       * </pre>
+       *
+       * <code>bytes audio = 1;</code>
+       *
+       * @return The audio.
+       */
+      com.google.protobuf.ByteString getAudio();
+
+      /**
+       *
+       *
+       * <pre>
+       * Client-specific URI that points to an audio clip accessible to the
+       * client.
+       * </pre>
+       *
+       * <code>string uri = 2;</code>
+       *
+       * @return Whether the uri field is set.
+       */
+      boolean hasUri();
+      /**
+       *
+       *
+       * <pre>
+       * Client-specific URI that points to an audio clip accessible to the
+       * client.
+       * </pre>
+       *
+       * <code>string uri = 2;</code>
+       *
+       * @return The uri.
+       */
+      java.lang.String getUri();
+      /**
+       *
+       *
+       * <pre>
+       * Client-specific URI that points to an audio clip accessible to the
+       * client.
+       * </pre>
+       *
+       * <code>string uri = 2;</code>
+       *
+       * @return The bytes for uri.
+       */
+      com.google.protobuf.ByteString getUriBytes();
+
+      /**
+       *
+       *
+       * <pre>
+       * Whether the playback of this segment can be interrupted by the end
+       * user's speech and the client should then start the next Dialogflow
+       * request.
+       * </pre>
+       *
+       * <code>bool allow_playback_interruption = 3;</code>
+       *
+       * @return The allowPlaybackInterruption.
+       */
+      boolean getAllowPlaybackInterruption();
+
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.ContentCase
+          getContentCase();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Represents one segment of audio.
+     * </pre>
+     *
+     * Protobuf type {@code google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment}
+     */
+    public static final class Segment extends com.google.protobuf.GeneratedMessageV3
+        implements
+        // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment)
+        SegmentOrBuilder {
+      private static final long serialVersionUID = 0L;
+      // Use Segment.newBuilder() to construct.
+      private Segment(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+        super(builder);
+      }
+
+      private Segment() {}
+
+      @java.lang.Override
+      @SuppressWarnings({"unused"})
+      protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+        return new Segment();
+      }
+
+      @java.lang.Override
+      public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+        return this.unknownFields;
+      }
+
+      private Segment(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        this();
+        if (extensionRegistry == null) {
+          throw new java.lang.NullPointerException();
+        }
+        com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+            com.google.protobuf.UnknownFieldSet.newBuilder();
+        try {
+          boolean done = false;
+          while (!done) {
+            int tag = input.readTag();
+            switch (tag) {
+              case 0:
+                done = true;
+                break;
+              case 10:
+                {
+                  content_ = input.readBytes();
+                  contentCase_ = 1;
+                  break;
+                }
+              case 18:
+                {
+                  java.lang.String s = input.readStringRequireUtf8();
+                  contentCase_ = 2;
+                  content_ = s;
+                  break;
+                }
+              case 24:
+                {
+                  allowPlaybackInterruption_ = input.readBool();
+                  break;
+                }
+              default:
+                {
+                  if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                    done = true;
+                  }
+                  break;
+                }
+            }
+          }
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          throw e.setUnfinishedMessage(this);
+        } catch (com.google.protobuf.UninitializedMessageException e) {
+          throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+        } catch (java.io.IOException e) {
+          throw new com.google.protobuf.InvalidProtocolBufferException(e)
+              .setUnfinishedMessage(this);
+        } finally {
+          this.unknownFields = unknownFields.build();
+          makeExtensionsImmutable();
+        }
+      }
+
+      public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+        return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+            .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+            .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.class,
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+                    .class);
+      }
+
+      private int contentCase_ = 0;
+      private java.lang.Object content_;
+
+      public enum ContentCase
+          implements
+              com.google.protobuf.Internal.EnumLite,
+              com.google.protobuf.AbstractMessage.InternalOneOfEnum {
+        AUDIO(1),
+        URI(2),
+        CONTENT_NOT_SET(0);
+        private final int value;
+
+        private ContentCase(int value) {
+          this.value = value;
+        }
+        /**
+         * @param value The number of the enum to look for.
+         * @return The enum associated with the given number.
+         * @deprecated Use {@link #forNumber(int)} instead.
+         */
+        @java.lang.Deprecated
+        public static ContentCase valueOf(int value) {
+          return forNumber(value);
+        }
+
+        public static ContentCase forNumber(int value) {
+          switch (value) {
+            case 1:
+              return AUDIO;
+            case 2:
+              return URI;
+            case 0:
+              return CONTENT_NOT_SET;
+            default:
+              return null;
+          }
+        }
+
+        public int getNumber() {
+          return this.value;
+        }
+      };
+
+      public ContentCase getContentCase() {
+        return ContentCase.forNumber(contentCase_);
+      }
+
+      public static final int AUDIO_FIELD_NUMBER = 1;
+      /**
+       *
+       *
+       * <pre>
+       * Raw audio synthesized from the Dialogflow agent's response using
+       * the output config specified in the request.
+       * </pre>
+       *
+       * <code>bytes audio = 1;</code>
+       *
+       * @return Whether the audio field is set.
+       */
+      @java.lang.Override
+      public boolean hasAudio() {
+        return contentCase_ == 1;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Raw audio synthesized from the Dialogflow agent's response using
+       * the output config specified in the request.
+       * </pre>
+       *
+       * <code>bytes audio = 1;</code>
+       *
+       * @return The audio.
+       */
+      @java.lang.Override
+      public com.google.protobuf.ByteString getAudio() {
+        if (contentCase_ == 1) {
+          return (com.google.protobuf.ByteString) content_;
+        }
+        return com.google.protobuf.ByteString.EMPTY;
+      }
+
+      public static final int URI_FIELD_NUMBER = 2;
+      /**
+       *
+       *
+       * <pre>
+       * Client-specific URI that points to an audio clip accessible to the
+       * client.
+       * </pre>
+       *
+       * <code>string uri = 2;</code>
+       *
+       * @return Whether the uri field is set.
+       */
+      public boolean hasUri() {
+        return contentCase_ == 2;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Client-specific URI that points to an audio clip accessible to the
+       * client.
+       * </pre>
+       *
+       * <code>string uri = 2;</code>
+       *
+       * @return The uri.
+       */
+      public java.lang.String getUri() {
+        java.lang.Object ref = "";
+        if (contentCase_ == 2) {
+          ref = content_;
+        }
+        if (ref instanceof java.lang.String) {
+          return (java.lang.String) ref;
+        } else {
+          com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          if (contentCase_ == 2) {
+            content_ = s;
+          }
+          return s;
+        }
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Client-specific URI that points to an audio clip accessible to the
+       * client.
+       * </pre>
+       *
+       * <code>string uri = 2;</code>
+       *
+       * @return The bytes for uri.
+       */
+      public com.google.protobuf.ByteString getUriBytes() {
+        java.lang.Object ref = "";
+        if (contentCase_ == 2) {
+          ref = content_;
+        }
+        if (ref instanceof java.lang.String) {
+          com.google.protobuf.ByteString b =
+              com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+          if (contentCase_ == 2) {
+            content_ = b;
+          }
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+
+      public static final int ALLOW_PLAYBACK_INTERRUPTION_FIELD_NUMBER = 3;
+      private boolean allowPlaybackInterruption_;
+      /**
+       *
+       *
+       * <pre>
+       * Whether the playback of this segment can be interrupted by the end
+       * user's speech and the client should then start the next Dialogflow
+       * request.
+       * </pre>
+       *
+       * <code>bool allow_playback_interruption = 3;</code>
+       *
+       * @return The allowPlaybackInterruption.
+       */
+      @java.lang.Override
+      public boolean getAllowPlaybackInterruption() {
+        return allowPlaybackInterruption_;
+      }
+
+      private byte memoizedIsInitialized = -1;
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        byte isInitialized = memoizedIsInitialized;
+        if (isInitialized == 1) return true;
+        if (isInitialized == 0) return false;
+
+        memoizedIsInitialized = 1;
+        return true;
+      }
+
+      @java.lang.Override
+      public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+        if (contentCase_ == 1) {
+          output.writeBytes(1, (com.google.protobuf.ByteString) content_);
+        }
+        if (contentCase_ == 2) {
+          com.google.protobuf.GeneratedMessageV3.writeString(output, 2, content_);
+        }
+        if (allowPlaybackInterruption_ != false) {
+          output.writeBool(3, allowPlaybackInterruption_);
+        }
+        unknownFields.writeTo(output);
+      }
+
+      @java.lang.Override
+      public int getSerializedSize() {
+        int size = memoizedSize;
+        if (size != -1) return size;
+
+        size = 0;
+        if (contentCase_ == 1) {
+          size +=
+              com.google.protobuf.CodedOutputStream.computeBytesSize(
+                  1, (com.google.protobuf.ByteString) content_);
+        }
+        if (contentCase_ == 2) {
+          size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, content_);
+        }
+        if (allowPlaybackInterruption_ != false) {
+          size +=
+              com.google.protobuf.CodedOutputStream.computeBoolSize(3, allowPlaybackInterruption_);
+        }
+        size += unknownFields.getSerializedSize();
+        memoizedSize = size;
+        return size;
+      }
+
+      @java.lang.Override
+      public boolean equals(final java.lang.Object obj) {
+        if (obj == this) {
+          return true;
+        }
+        if (!(obj
+            instanceof com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment)) {
+          return super.equals(obj);
+        }
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment other =
+            (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment) obj;
+
+        if (getAllowPlaybackInterruption() != other.getAllowPlaybackInterruption()) return false;
+        if (!getContentCase().equals(other.getContentCase())) return false;
+        switch (contentCase_) {
+          case 1:
+            if (!getAudio().equals(other.getAudio())) return false;
+            break;
+          case 2:
+            if (!getUri().equals(other.getUri())) return false;
+            break;
+          case 0:
+          default:
+        }
+        if (!unknownFields.equals(other.unknownFields)) return false;
+        return true;
+      }
+
+      @java.lang.Override
+      public int hashCode() {
+        if (memoizedHashCode != 0) {
+          return memoizedHashCode;
+        }
+        int hash = 41;
+        hash = (19 * hash) + getDescriptor().hashCode();
+        hash = (37 * hash) + ALLOW_PLAYBACK_INTERRUPTION_FIELD_NUMBER;
+        hash =
+            (53 * hash) + com.google.protobuf.Internal.hashBoolean(getAllowPlaybackInterruption());
+        switch (contentCase_) {
+          case 1:
+            hash = (37 * hash) + AUDIO_FIELD_NUMBER;
+            hash = (53 * hash) + getAudio().hashCode();
+            break;
+          case 2:
+            hash = (37 * hash) + URI_FIELD_NUMBER;
+            hash = (53 * hash) + getUri().hashCode();
+            break;
+          case 0:
+          default:
+        }
+        hash = (29 * hash) + unknownFields.hashCode();
+        memoizedHashCode = hash;
+        return hash;
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(java.nio.ByteBuffer data)
+              throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(
+              java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+              throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data, extensionRegistry);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(com.google.protobuf.ByteString data)
+              throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(
+              com.google.protobuf.ByteString data,
+              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+              throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data, extensionRegistry);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(byte[] data) throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+              throws com.google.protobuf.InvalidProtocolBufferException {
+        return PARSER.parseFrom(data, extensionRegistry);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(java.io.InputStream input) throws java.io.IOException {
+        return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(
+              java.io.InputStream input,
+              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+              throws java.io.IOException {
+        return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+            PARSER, input, extensionRegistry);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseDelimitedFrom(java.io.InputStream input) throws java.io.IOException {
+        return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseDelimitedFrom(
+              java.io.InputStream input,
+              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+              throws java.io.IOException {
+        return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+            PARSER, input, extensionRegistry);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+        return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          parseFrom(
+              com.google.protobuf.CodedInputStream input,
+              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+              throws java.io.IOException {
+        return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+            PARSER, input, extensionRegistry);
+      }
+
+      @java.lang.Override
+      public Builder newBuilderForType() {
+        return newBuilder();
+      }
+
+      public static Builder newBuilder() {
+        return DEFAULT_INSTANCE.toBuilder();
+      }
+
+      public static Builder newBuilder(
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment prototype) {
+        return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+      }
+
+      @java.lang.Override
+      public Builder toBuilder() {
+        return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+      }
+
+      @java.lang.Override
+      protected Builder newBuilderForType(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        Builder builder = new Builder(parent);
+        return builder;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Represents one segment of audio.
+       * </pre>
+       *
+       * Protobuf type {@code google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment}
+       */
+      public static final class Builder
+          extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+          implements
+          // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment)
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder {
+        public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+          return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+              .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_descriptor;
+        }
+
+        @java.lang.Override
+        protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+            internalGetFieldAccessorTable() {
+          return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+              .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_fieldAccessorTable
+              .ensureFieldAccessorsInitialized(
+                  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.class,
+                  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+                      .class);
+        }
+
+        // Construct using
+        // com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.newBuilder()
+        private Builder() {
+          maybeForceBuilderInitialization();
+        }
+
+        private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+          super(parent);
+          maybeForceBuilderInitialization();
+        }
+
+        private void maybeForceBuilderInitialization() {
+          if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+        }
+
+        @java.lang.Override
+        public Builder clear() {
+          super.clear();
+          allowPlaybackInterruption_ = false;
+
+          contentCase_ = 0;
+          content_ = null;
+          return this;
+        }
+
+        @java.lang.Override
+        public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+          return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+              .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_Segment_descriptor;
+        }
+
+        @java.lang.Override
+        public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+            getDefaultInstanceForType() {
+          return com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+              .getDefaultInstance();
+        }
+
+        @java.lang.Override
+        public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment build() {
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment result =
+              buildPartial();
+          if (!result.isInitialized()) {
+            throw newUninitializedMessageException(result);
+          }
+          return result;
+        }
+
+        @java.lang.Override
+        public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+            buildPartial() {
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment result =
+              new com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment(this);
+          if (contentCase_ == 1) {
+            result.content_ = content_;
+          }
+          if (contentCase_ == 2) {
+            result.content_ = content_;
+          }
+          result.allowPlaybackInterruption_ = allowPlaybackInterruption_;
+          result.contentCase_ = contentCase_;
+          onBuilt();
+          return result;
+        }
+
+        @java.lang.Override
+        public Builder clone() {
+          return super.clone();
+        }
+
+        @java.lang.Override
+        public Builder setField(
+            com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+          return super.setField(field, value);
+        }
+
+        @java.lang.Override
+        public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+          return super.clearField(field);
+        }
+
+        @java.lang.Override
+        public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+          return super.clearOneof(oneof);
+        }
+
+        @java.lang.Override
+        public Builder setRepeatedField(
+            com.google.protobuf.Descriptors.FieldDescriptor field,
+            int index,
+            java.lang.Object value) {
+          return super.setRepeatedField(field, index, value);
+        }
+
+        @java.lang.Override
+        public Builder addRepeatedField(
+            com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+          return super.addRepeatedField(field, value);
+        }
+
+        @java.lang.Override
+        public Builder mergeFrom(com.google.protobuf.Message other) {
+          if (other
+              instanceof com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment) {
+            return mergeFrom(
+                (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment) other);
+          } else {
+            super.mergeFrom(other);
+            return this;
+          }
+        }
+
+        public Builder mergeFrom(
+            com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment other) {
+          if (other
+              == com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+                  .getDefaultInstance()) return this;
+          if (other.getAllowPlaybackInterruption() != false) {
+            setAllowPlaybackInterruption(other.getAllowPlaybackInterruption());
+          }
+          switch (other.getContentCase()) {
+            case AUDIO:
+              {
+                setAudio(other.getAudio());
+                break;
+              }
+            case URI:
+              {
+                contentCase_ = 2;
+                content_ = other.content_;
+                onChanged();
+                break;
+              }
+            case CONTENT_NOT_SET:
+              {
+                break;
+              }
+          }
+          this.mergeUnknownFields(other.unknownFields);
+          onChanged();
+          return this;
+        }
+
+        @java.lang.Override
+        public final boolean isInitialized() {
+          return true;
+        }
+
+        @java.lang.Override
+        public Builder mergeFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws java.io.IOException {
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment parsedMessage =
+              null;
+          try {
+            parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+            parsedMessage =
+                (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment)
+                    e.getUnfinishedMessage();
+            throw e.unwrapIOException();
+          } finally {
+            if (parsedMessage != null) {
+              mergeFrom(parsedMessage);
+            }
+          }
+          return this;
+        }
+
+        private int contentCase_ = 0;
+        private java.lang.Object content_;
+
+        public ContentCase getContentCase() {
+          return ContentCase.forNumber(contentCase_);
+        }
+
+        public Builder clearContent() {
+          contentCase_ = 0;
+          content_ = null;
+          onChanged();
+          return this;
+        }
+
+        /**
+         *
+         *
+         * <pre>
+         * Raw audio synthesized from the Dialogflow agent's response using
+         * the output config specified in the request.
+         * </pre>
+         *
+         * <code>bytes audio = 1;</code>
+         *
+         * @return Whether the audio field is set.
+         */
+        public boolean hasAudio() {
+          return contentCase_ == 1;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Raw audio synthesized from the Dialogflow agent's response using
+         * the output config specified in the request.
+         * </pre>
+         *
+         * <code>bytes audio = 1;</code>
+         *
+         * @return The audio.
+         */
+        public com.google.protobuf.ByteString getAudio() {
+          if (contentCase_ == 1) {
+            return (com.google.protobuf.ByteString) content_;
+          }
+          return com.google.protobuf.ByteString.EMPTY;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Raw audio synthesized from the Dialogflow agent's response using
+         * the output config specified in the request.
+         * </pre>
+         *
+         * <code>bytes audio = 1;</code>
+         *
+         * @param value The audio to set.
+         * @return This builder for chaining.
+         */
+        public Builder setAudio(com.google.protobuf.ByteString value) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          contentCase_ = 1;
+          content_ = value;
+          onChanged();
+          return this;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Raw audio synthesized from the Dialogflow agent's response using
+         * the output config specified in the request.
+         * </pre>
+         *
+         * <code>bytes audio = 1;</code>
+         *
+         * @return This builder for chaining.
+         */
+        public Builder clearAudio() {
+          if (contentCase_ == 1) {
+            contentCase_ = 0;
+            content_ = null;
+            onChanged();
+          }
+          return this;
+        }
+
+        /**
+         *
+         *
+         * <pre>
+         * Client-specific URI that points to an audio clip accessible to the
+         * client.
+         * </pre>
+         *
+         * <code>string uri = 2;</code>
+         *
+         * @return Whether the uri field is set.
+         */
+        @java.lang.Override
+        public boolean hasUri() {
+          return contentCase_ == 2;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Client-specific URI that points to an audio clip accessible to the
+         * client.
+         * </pre>
+         *
+         * <code>string uri = 2;</code>
+         *
+         * @return The uri.
+         */
+        @java.lang.Override
+        public java.lang.String getUri() {
+          java.lang.Object ref = "";
+          if (contentCase_ == 2) {
+            ref = content_;
+          }
+          if (!(ref instanceof java.lang.String)) {
+            com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+            java.lang.String s = bs.toStringUtf8();
+            if (contentCase_ == 2) {
+              content_ = s;
+            }
+            return s;
+          } else {
+            return (java.lang.String) ref;
+          }
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Client-specific URI that points to an audio clip accessible to the
+         * client.
+         * </pre>
+         *
+         * <code>string uri = 2;</code>
+         *
+         * @return The bytes for uri.
+         */
+        @java.lang.Override
+        public com.google.protobuf.ByteString getUriBytes() {
+          java.lang.Object ref = "";
+          if (contentCase_ == 2) {
+            ref = content_;
+          }
+          if (ref instanceof String) {
+            com.google.protobuf.ByteString b =
+                com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+            if (contentCase_ == 2) {
+              content_ = b;
+            }
+            return b;
+          } else {
+            return (com.google.protobuf.ByteString) ref;
+          }
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Client-specific URI that points to an audio clip accessible to the
+         * client.
+         * </pre>
+         *
+         * <code>string uri = 2;</code>
+         *
+         * @param value The uri to set.
+         * @return This builder for chaining.
+         */
+        public Builder setUri(java.lang.String value) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          contentCase_ = 2;
+          content_ = value;
+          onChanged();
+          return this;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Client-specific URI that points to an audio clip accessible to the
+         * client.
+         * </pre>
+         *
+         * <code>string uri = 2;</code>
+         *
+         * @return This builder for chaining.
+         */
+        public Builder clearUri() {
+          if (contentCase_ == 2) {
+            contentCase_ = 0;
+            content_ = null;
+            onChanged();
+          }
+          return this;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Client-specific URI that points to an audio clip accessible to the
+         * client.
+         * </pre>
+         *
+         * <code>string uri = 2;</code>
+         *
+         * @param value The bytes for uri to set.
+         * @return This builder for chaining.
+         */
+        public Builder setUriBytes(com.google.protobuf.ByteString value) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          checkByteStringIsUtf8(value);
+          contentCase_ = 2;
+          content_ = value;
+          onChanged();
+          return this;
+        }
+
+        private boolean allowPlaybackInterruption_;
+        /**
+         *
+         *
+         * <pre>
+         * Whether the playback of this segment can be interrupted by the end
+         * user's speech and the client should then start the next Dialogflow
+         * request.
+         * </pre>
+         *
+         * <code>bool allow_playback_interruption = 3;</code>
+         *
+         * @return The allowPlaybackInterruption.
+         */
+        @java.lang.Override
+        public boolean getAllowPlaybackInterruption() {
+          return allowPlaybackInterruption_;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Whether the playback of this segment can be interrupted by the end
+         * user's speech and the client should then start the next Dialogflow
+         * request.
+         * </pre>
+         *
+         * <code>bool allow_playback_interruption = 3;</code>
+         *
+         * @param value The allowPlaybackInterruption to set.
+         * @return This builder for chaining.
+         */
+        public Builder setAllowPlaybackInterruption(boolean value) {
+
+          allowPlaybackInterruption_ = value;
+          onChanged();
+          return this;
+        }
+        /**
+         *
+         *
+         * <pre>
+         * Whether the playback of this segment can be interrupted by the end
+         * user's speech and the client should then start the next Dialogflow
+         * request.
+         * </pre>
+         *
+         * <code>bool allow_playback_interruption = 3;</code>
+         *
+         * @return This builder for chaining.
+         */
+        public Builder clearAllowPlaybackInterruption() {
+
+          allowPlaybackInterruption_ = false;
+          onChanged();
+          return this;
+        }
+
+        @java.lang.Override
+        public final Builder setUnknownFields(
+            final com.google.protobuf.UnknownFieldSet unknownFields) {
+          return super.setUnknownFields(unknownFields);
+        }
+
+        @java.lang.Override
+        public final Builder mergeUnknownFields(
+            final com.google.protobuf.UnknownFieldSet unknownFields) {
+          return super.mergeUnknownFields(unknownFields);
+        }
+
+        // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment)
+      }
+
+      // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment)
+      private static final com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          DEFAULT_INSTANCE;
+
+      static {
+        DEFAULT_INSTANCE =
+            new com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment();
+      }
+
+      public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          getDefaultInstance() {
+        return DEFAULT_INSTANCE;
+      }
+
+      private static final com.google.protobuf.Parser<Segment> PARSER =
+          new com.google.protobuf.AbstractParser<Segment>() {
+            @java.lang.Override
+            public Segment parsePartialFrom(
+                com.google.protobuf.CodedInputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+              return new Segment(input, extensionRegistry);
+            }
+          };
+
+      public static com.google.protobuf.Parser<Segment> parser() {
+        return PARSER;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Parser<Segment> getParserForType() {
+        return PARSER;
+      }
+
+      @java.lang.Override
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+          getDefaultInstanceForType() {
+        return DEFAULT_INSTANCE;
+      }
+    }
+
+    public static final int SEGMENTS_FIELD_NUMBER = 1;
+    private java.util.List<com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>
+        segments_;
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    @java.lang.Override
+    public java.util.List<com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>
+        getSegmentsList() {
+      return segments_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    @java.lang.Override
+    public java.util.List<
+            ? extends
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder>
+        getSegmentsOrBuilderList() {
+      return segments_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    @java.lang.Override
+    public int getSegmentsCount() {
+      return segments_.size();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment getSegments(
+        int index) {
+      return segments_.get(index);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Segments this audio response is composed of.
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+     * </code>
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder
+        getSegmentsOrBuilder(int index) {
+      return segments_.get(index);
+    }
+
+    private byte memoizedIsInitialized = -1;
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+      for (int i = 0; i < segments_.size(); i++) {
+        output.writeMessage(1, segments_.get(i));
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      for (int i = 0; i < segments_.size(); i++) {
+        size += com.google.protobuf.CodedOutputStream.computeMessageSize(1, segments_.get(i));
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+        return true;
+      }
+      if (!(obj instanceof com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio)) {
+        return super.equals(obj);
+      }
+      com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio other =
+          (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) obj;
+
+      if (!getSegmentsList().equals(other.getSegmentsList())) return false;
+      if (!unknownFields.equals(other.unknownFields)) return false;
+      return true;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      if (getSegmentsCount() > 0) {
+        hash = (37 * hash) + SEGMENTS_FIELD_NUMBER;
+        hash = (53 * hash) + getSegmentsList().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        byte[] data) throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        java.io.InputStream input) throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+          PARSER, input, extensionRegistry);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseDelimitedFrom(
+        java.io.InputStream input) throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseDelimitedFrom(
+        java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+          PARSER, input, extensionRegistry);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+    }
+
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+          PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() {
+      return newBuilder();
+    }
+
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+
+    public static Builder newBuilder(
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Represents an audio message that is composed of both segments
+     * synthesized from the Dialogflow agent prompts and ones hosted externally
+     * at the specified URIs.
+     * </pre>
+     *
+     * Protobuf type {@code google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio}
+     */
+    public static final class Builder
+        extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+        implements
+        // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio)
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudioOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+        return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+            .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+            .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.class,
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder.class);
+      }
+
+      // Construct using com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
+          getSegmentsFieldBuilder();
+        }
+      }
+
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        if (segmentsBuilder_ == null) {
+          segments_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000001);
+        } else {
+          segmentsBuilder_.clear();
+        }
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+        return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+            .internal_static_google_cloud_dialogflow_v2beta1_ResponseMessage_MixedAudio_descriptor;
+      }
+
+      @java.lang.Override
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio
+          getDefaultInstanceForType() {
+        return com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio build() {
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio buildPartial() {
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio result =
+            new com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio(this);
+        int from_bitField0_ = bitField0_;
+        if (segmentsBuilder_ == null) {
+          if (((bitField0_ & 0x00000001) != 0)) {
+            segments_ = java.util.Collections.unmodifiableList(segments_);
+            bitField0_ = (bitField0_ & ~0x00000001);
+          }
+          result.segments_ = segments_;
+        } else {
+          result.segments_ = segmentsBuilder_.build();
+        }
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return super.clone();
+      }
+
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+        return super.setField(field, value);
+      }
+
+      @java.lang.Override
+      public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return super.clearField(field);
+      }
+
+      @java.lang.Override
+      public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return super.clearOneof(oneof);
+      }
+
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index,
+          java.lang.Object value) {
+        return super.setRepeatedField(field, index, value);
+      }
+
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+        return super.addRepeatedField(field, value);
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) {
+          return mergeFrom((com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio other) {
+        if (other
+            == com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance())
+          return this;
+        if (segmentsBuilder_ == null) {
+          if (!other.segments_.isEmpty()) {
+            if (segments_.isEmpty()) {
+              segments_ = other.segments_;
+              bitField0_ = (bitField0_ & ~0x00000001);
+            } else {
+              ensureSegmentsIsMutable();
+              segments_.addAll(other.segments_);
+            }
+            onChanged();
+          }
+        } else {
+          if (!other.segments_.isEmpty()) {
+            if (segmentsBuilder_.isEmpty()) {
+              segmentsBuilder_.dispose();
+              segmentsBuilder_ = null;
+              segments_ = other.segments_;
+              bitField0_ = (bitField0_ & ~0x00000001);
+              segmentsBuilder_ =
+                  com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
+                      ? getSegmentsFieldBuilder()
+                      : null;
+            } else {
+              segmentsBuilder_.addAllMessages(other.segments_);
+            }
+          }
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage =
+              (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio)
+                  e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private int bitField0_;
+
+      private java.util.List<com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>
+          segments_ = java.util.Collections.emptyList();
+
+      private void ensureSegmentsIsMutable() {
+        if (!((bitField0_ & 0x00000001) != 0)) {
+          segments_ =
+              new java.util.ArrayList<
+                  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>(
+                  segments_);
+          bitField0_ |= 0x00000001;
+        }
+      }
+
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment,
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder,
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder>
+          segmentsBuilder_;
+
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public java.util.List<com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>
+          getSegmentsList() {
+        if (segmentsBuilder_ == null) {
+          return java.util.Collections.unmodifiableList(segments_);
+        } else {
+          return segmentsBuilder_.getMessageList();
+        }
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public int getSegmentsCount() {
+        if (segmentsBuilder_ == null) {
+          return segments_.size();
+        } else {
+          return segmentsBuilder_.getCount();
+        }
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment getSegments(
+          int index) {
+        if (segmentsBuilder_ == null) {
+          return segments_.get(index);
+        } else {
+          return segmentsBuilder_.getMessage(index);
+        }
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder setSegments(
+          int index, com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment value) {
+        if (segmentsBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureSegmentsIsMutable();
+          segments_.set(index, value);
+          onChanged();
+        } else {
+          segmentsBuilder_.setMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder setSegments(
+          int index,
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+              builderForValue) {
+        if (segmentsBuilder_ == null) {
+          ensureSegmentsIsMutable();
+          segments_.set(index, builderForValue.build());
+          onChanged();
+        } else {
+          segmentsBuilder_.setMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder addSegments(
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment value) {
+        if (segmentsBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureSegmentsIsMutable();
+          segments_.add(value);
+          onChanged();
+        } else {
+          segmentsBuilder_.addMessage(value);
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder addSegments(
+          int index, com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment value) {
+        if (segmentsBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          ensureSegmentsIsMutable();
+          segments_.add(index, value);
+          onChanged();
+        } else {
+          segmentsBuilder_.addMessage(index, value);
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder addSegments(
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+              builderForValue) {
+        if (segmentsBuilder_ == null) {
+          ensureSegmentsIsMutable();
+          segments_.add(builderForValue.build());
+          onChanged();
+        } else {
+          segmentsBuilder_.addMessage(builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder addSegments(
+          int index,
+          com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+              builderForValue) {
+        if (segmentsBuilder_ == null) {
+          ensureSegmentsIsMutable();
+          segments_.add(index, builderForValue.build());
+          onChanged();
+        } else {
+          segmentsBuilder_.addMessage(index, builderForValue.build());
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder addAllSegments(
+          java.lang.Iterable<
+                  ? extends com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment>
+              values) {
+        if (segmentsBuilder_ == null) {
+          ensureSegmentsIsMutable();
+          com.google.protobuf.AbstractMessageLite.Builder.addAll(values, segments_);
+          onChanged();
+        } else {
+          segmentsBuilder_.addAllMessages(values);
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder clearSegments() {
+        if (segmentsBuilder_ == null) {
+          segments_ = java.util.Collections.emptyList();
+          bitField0_ = (bitField0_ & ~0x00000001);
+          onChanged();
+        } else {
+          segmentsBuilder_.clear();
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public Builder removeSegments(int index) {
+        if (segmentsBuilder_ == null) {
+          ensureSegmentsIsMutable();
+          segments_.remove(index);
+          onChanged();
+        } else {
+          segmentsBuilder_.remove(index);
+        }
+        return this;
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+          getSegmentsBuilder(int index) {
+        return getSegmentsFieldBuilder().getBuilder(index);
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder
+          getSegmentsOrBuilder(int index) {
+        if (segmentsBuilder_ == null) {
+          return segments_.get(index);
+        } else {
+          return segmentsBuilder_.getMessageOrBuilder(index);
         }
       }
-
-      public Builder mergeFrom(
-          com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction other) {
-        if (other
-            == com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
-                .getDefaultInstance()) return this;
-        this.mergeUnknownFields(other.unknownFields);
-        onChanged();
-        return this;
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public java.util.List<
+              ? extends
+                  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder>
+          getSegmentsOrBuilderList() {
+        if (segmentsBuilder_ != null) {
+          return segmentsBuilder_.getMessageOrBuilderList();
+        } else {
+          return java.util.Collections.unmodifiableList(segments_);
+        }
       }
-
-      @java.lang.Override
-      public final boolean isInitialized() {
-        return true;
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+          addSegmentsBuilder() {
+        return getSegmentsFieldBuilder()
+            .addBuilder(
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+                    .getDefaultInstance());
       }
-
-      @java.lang.Override
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage =
-              (com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction)
-                  e.getUnfinishedMessage();
-          throw e.unwrapIOException();
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder
+          addSegmentsBuilder(int index) {
+        return getSegmentsFieldBuilder()
+            .addBuilder(
+                index,
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment
+                    .getDefaultInstance());
+      }
+      /**
+       *
+       *
+       * <pre>
+       * Segments this audio response is composed of.
+       * </pre>
+       *
+       * <code>
+       * repeated .google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment segments = 1;
+       * </code>
+       */
+      public java.util.List<
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder>
+          getSegmentsBuilderList() {
+        return getSegmentsFieldBuilder().getBuilderList();
+      }
+
+      private com.google.protobuf.RepeatedFieldBuilderV3<
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment,
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder,
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder>
+          getSegmentsFieldBuilder() {
+        if (segmentsBuilder_ == null) {
+          segmentsBuilder_ =
+              new com.google.protobuf.RepeatedFieldBuilderV3<
+                  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment,
+                  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Segment.Builder,
+                  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.SegmentOrBuilder>(
+                  segments_, ((bitField0_ & 0x00000001) != 0), getParentForChildren(), isClean());
+          segments_ = null;
         }
-        return this;
+        return segmentsBuilder_;
       }
 
       @java.lang.Override
@@ -2201,44 +4452,44 @@ public final Builder mergeUnknownFields(
         return super.mergeUnknownFields(unknownFields);
       }
 
-      // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction)
+      // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio)
     }
 
-    // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction)
-    private static final com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
+    // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio)
+    private static final com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio
         DEFAULT_INSTANCE;
 
     static {
-      DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction();
+      DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio();
     }
 
-    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
+    public static com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio
         getDefaultInstance() {
       return DEFAULT_INSTANCE;
     }
 
-    private static final com.google.protobuf.Parser<EndInteraction> PARSER =
-        new com.google.protobuf.AbstractParser<EndInteraction>() {
+    private static final com.google.protobuf.Parser<MixedAudio> PARSER =
+        new com.google.protobuf.AbstractParser<MixedAudio>() {
           @java.lang.Override
-          public EndInteraction parsePartialFrom(
+          public MixedAudio parsePartialFrom(
               com.google.protobuf.CodedInputStream input,
               com.google.protobuf.ExtensionRegistryLite extensionRegistry)
               throws com.google.protobuf.InvalidProtocolBufferException {
-            return new EndInteraction(input, extensionRegistry);
+            return new MixedAudio(input, extensionRegistry);
           }
         };
 
-    public static com.google.protobuf.Parser<EndInteraction> parser() {
+    public static com.google.protobuf.Parser<MixedAudio> parser() {
       return PARSER;
     }
 
     @java.lang.Override
-    public com.google.protobuf.Parser<EndInteraction> getParserForType() {
+    public com.google.protobuf.Parser<MixedAudio> getParserForType() {
       return PARSER;
     }
 
     @java.lang.Override
-    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction
+    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio
         getDefaultInstanceForType() {
       return DEFAULT_INSTANCE;
     }
@@ -3367,6 +5618,7 @@ public enum MessageCase
     PAYLOAD(2),
     LIVE_AGENT_HANDOFF(3),
     END_INTERACTION(4),
+    MIXED_AUDIO(5),
     TELEPHONY_TRANSFER_CALL(6),
     MESSAGE_NOT_SET(0);
     private final int value;
@@ -3394,6 +5646,8 @@ public static MessageCase forNumber(int value) {
           return LIVE_AGENT_HANDOFF;
         case 4:
           return END_INTERACTION;
+        case 5:
+          return MIXED_AUDIO;
         case 6:
           return TELEPHONY_TRANSFER_CALL;
         case 0:
@@ -3630,6 +5884,61 @@ public com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction getEnd
     return com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction.getDefaultInstance();
   }
 
+  public static final int MIXED_AUDIO_FIELD_NUMBER = 5;
+  /**
+   *
+   *
+   * <pre>
+   * An audio response message composed of both the synthesized Dialogflow
+   * agent responses and the audios hosted in places known to the client.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+   *
+   * @return Whether the mixedAudio field is set.
+   */
+  @java.lang.Override
+  public boolean hasMixedAudio() {
+    return messageCase_ == 5;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * An audio response message composed of both the synthesized Dialogflow
+   * agent responses and the audios hosted in places known to the client.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+   *
+   * @return The mixedAudio.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio getMixedAudio() {
+    if (messageCase_ == 5) {
+      return (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * An audio response message composed of both the synthesized Dialogflow
+   * agent responses and the audios hosted in places known to the client.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudioOrBuilder
+      getMixedAudioOrBuilder() {
+    if (messageCase_ == 5) {
+      return (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance();
+  }
+
   public static final int TELEPHONY_TRANSFER_CALL_FIELD_NUMBER = 6;
   /**
    *
@@ -3722,6 +6031,10 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
       output.writeMessage(
           4, (com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction) message_);
     }
+    if (messageCase_ == 5) {
+      output.writeMessage(
+          5, (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_);
+    }
     if (messageCase_ == 6) {
       output.writeMessage(
           6, (com.google.cloud.dialogflow.v2beta1.ResponseMessage.TelephonyTransferCall) message_);
@@ -3755,6 +6068,11 @@ public int getSerializedSize() {
           com.google.protobuf.CodedOutputStream.computeMessageSize(
               4, (com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteraction) message_);
     }
+    if (messageCase_ == 5) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              5, (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_);
+    }
     if (messageCase_ == 6) {
       size +=
           com.google.protobuf.CodedOutputStream.computeMessageSize(
@@ -3791,6 +6109,9 @@ public boolean equals(final java.lang.Object obj) {
       case 4:
         if (!getEndInteraction().equals(other.getEndInteraction())) return false;
         break;
+      case 5:
+        if (!getMixedAudio().equals(other.getMixedAudio())) return false;
+        break;
       case 6:
         if (!getTelephonyTransferCall().equals(other.getTelephonyTransferCall())) return false;
         break;
@@ -3825,6 +6146,10 @@ public int hashCode() {
         hash = (37 * hash) + END_INTERACTION_FIELD_NUMBER;
         hash = (53 * hash) + getEndInteraction().hashCode();
         break;
+      case 5:
+        hash = (37 * hash) + MIXED_AUDIO_FIELD_NUMBER;
+        hash = (53 * hash) + getMixedAudio().hashCode();
+        break;
       case 6:
         hash = (37 * hash) + TELEPHONY_TRANSFER_CALL_FIELD_NUMBER;
         hash = (53 * hash) + getTelephonyTransferCall().hashCode();
@@ -4034,6 +6359,13 @@ public com.google.cloud.dialogflow.v2beta1.ResponseMessage buildPartial() {
           result.message_ = endInteractionBuilder_.build();
         }
       }
+      if (messageCase_ == 5) {
+        if (mixedAudioBuilder_ == null) {
+          result.message_ = message_;
+        } else {
+          result.message_ = mixedAudioBuilder_.build();
+        }
+      }
       if (messageCase_ == 6) {
         if (telephonyTransferCallBuilder_ == null) {
           result.message_ = message_;
@@ -4113,6 +6445,11 @@ public Builder mergeFrom(com.google.cloud.dialogflow.v2beta1.ResponseMessage oth
             mergeEndInteraction(other.getEndInteraction());
             break;
           }
+        case MIXED_AUDIO:
+          {
+            mergeMixedAudio(other.getMixedAudio());
+            break;
+          }
         case TELEPHONY_TRANSFER_CALL:
           {
             mergeTelephonyTransferCall(other.getTelephonyTransferCall());
@@ -5065,6 +7402,232 @@ public Builder clearEndInteraction() {
       return endInteractionBuilder_;
     }
 
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio,
+            com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder,
+            com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudioOrBuilder>
+        mixedAudioBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     *
+     * @return Whether the mixedAudio field is set.
+     */
+    @java.lang.Override
+    public boolean hasMixedAudio() {
+      return messageCase_ == 5;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     *
+     * @return The mixedAudio.
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio getMixedAudio() {
+      if (mixedAudioBuilder_ == null) {
+        if (messageCase_ == 5) {
+          return (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance();
+      } else {
+        if (messageCase_ == 5) {
+          return mixedAudioBuilder_.getMessage();
+        }
+        return com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     */
+    public Builder setMixedAudio(
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio value) {
+      if (mixedAudioBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        message_ = value;
+        onChanged();
+      } else {
+        mixedAudioBuilder_.setMessage(value);
+      }
+      messageCase_ = 5;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     */
+    public Builder setMixedAudio(
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder builderForValue) {
+      if (mixedAudioBuilder_ == null) {
+        message_ = builderForValue.build();
+        onChanged();
+      } else {
+        mixedAudioBuilder_.setMessage(builderForValue.build());
+      }
+      messageCase_ = 5;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     */
+    public Builder mergeMixedAudio(
+        com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio value) {
+      if (mixedAudioBuilder_ == null) {
+        if (messageCase_ == 5
+            && message_
+                != com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio
+                    .getDefaultInstance()) {
+          message_ =
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.newBuilder(
+                      (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          message_ = value;
+        }
+        onChanged();
+      } else {
+        if (messageCase_ == 5) {
+          mixedAudioBuilder_.mergeFrom(value);
+        } else {
+          mixedAudioBuilder_.setMessage(value);
+        }
+      }
+      messageCase_ = 5;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     */
+    public Builder clearMixedAudio() {
+      if (mixedAudioBuilder_ == null) {
+        if (messageCase_ == 5) {
+          messageCase_ = 0;
+          message_ = null;
+          onChanged();
+        }
+      } else {
+        if (messageCase_ == 5) {
+          messageCase_ = 0;
+          message_ = null;
+        }
+        mixedAudioBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder
+        getMixedAudioBuilder() {
+      return getMixedAudioFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudioOrBuilder
+        getMixedAudioOrBuilder() {
+      if ((messageCase_ == 5) && (mixedAudioBuilder_ != null)) {
+        return mixedAudioBuilder_.getMessageOrBuilder();
+      } else {
+        if (messageCase_ == 5) {
+          return (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * An audio response message composed of both the synthesized Dialogflow
+     * agent responses and the audios hosted in places known to the client.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio,
+            com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder,
+            com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudioOrBuilder>
+        getMixedAudioFieldBuilder() {
+      if (mixedAudioBuilder_ == null) {
+        if (!(messageCase_ == 5)) {
+          message_ =
+              com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.getDefaultInstance();
+        }
+        mixedAudioBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio,
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio.Builder,
+                com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudioOrBuilder>(
+                (com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio) message_,
+                getParentForChildren(),
+                isClean());
+        message_ = null;
+      }
+      messageCase_ = 5;
+      onChanged();
+      ;
+      return mixedAudioBuilder_;
+    }
+
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.cloud.dialogflow.v2beta1.ResponseMessage.TelephonyTransferCall,
             com.google.cloud.dialogflow.v2beta1.ResponseMessage.TelephonyTransferCall.Builder,
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessageOrBuilder.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessageOrBuilder.java
index fda147698..d06ccd245 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessageOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/ResponseMessageOrBuilder.java
@@ -174,6 +174,44 @@ public interface ResponseMessageOrBuilder
   com.google.cloud.dialogflow.v2beta1.ResponseMessage.EndInteractionOrBuilder
       getEndInteractionOrBuilder();
 
+  /**
+   *
+   *
+   * <pre>
+   * An audio response message composed of both the synthesized Dialogflow
+   * agent responses and the audios hosted in places known to the client.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+   *
+   * @return Whether the mixedAudio field is set.
+   */
+  boolean hasMixedAudio();
+  /**
+   *
+   *
+   * <pre>
+   * An audio response message composed of both the synthesized Dialogflow
+   * agent responses and the audios hosted in places known to the client.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+   *
+   * @return The mixedAudio.
+   */
+  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio getMixedAudio();
+  /**
+   *
+   *
+   * <pre>
+   * An audio response message composed of both the synthesized Dialogflow
+   * agent responses and the audios hosted in places known to the client.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudio mixed_audio = 5;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.ResponseMessage.MixedAudioOrBuilder getMixedAudioOrBuilder();
+
   /**
    *
    *
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentRequest.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentRequest.java
new file mode 100644
index 000000000..049bc4871
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentRequest.java
@@ -0,0 +1,3565 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2beta1/participant.proto
+
+package com.google.cloud.dialogflow.v2beta1;
+
+/**
+ *
+ *
+ * <pre>
+ * The top-level message sent by the client to the
+ * [Participants.StreamingAnalyzeContent][google.cloud.dialogflow.v2beta1.Participants.StreamingAnalyzeContent] method.
+ * Multiple request messages should be sent in order:
+ * 1.  The first message must contain
+ *     [participant][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.participant],
+ *     [config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] and optionally
+ *     [query_params][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.query_params]. If you want
+ *     to receive an audio response, it should also contain
+ *     [reply_audio_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.reply_audio_config].
+ *     The message must not contain
+ *     [input][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input].
+ * 2.  If [config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] in the first message
+ *     was set to [audio_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.audio_config],
+ *     all subsequent messages must contain
+ *     [input_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_audio] to continue
+ *     with Speech recognition.
+ *     If you decide to rather analyze text input after you already started
+ *     Speech recognition, please send a message with
+ *     [StreamingAnalyzeContentRequest.input_text][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_text].
+ *     However, note that:
+ *     * Dialogflow will bill you for the audio so far.
+ *     * Dialogflow discards all Speech recognition results in favor of the
+ *       text input.
+ *  3. If [StreamingAnalyzeContentRequest.config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] in the first message was set
+ *    to [StreamingAnalyzeContentRequest.text_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.text_config], then the second message
+ *    must contain only [input_text][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_text].
+ *    Moreover, you must not send more than two messages.
+ *  After you sent all input, you must half-close or abort the request stream.
+ * </pre>
+ *
+ * Protobuf type {@code google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest}
+ */
+public final class StreamingAnalyzeContentRequest extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest)
+    StreamingAnalyzeContentRequestOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use StreamingAnalyzeContentRequest.newBuilder() to construct.
+  private StreamingAnalyzeContentRequest(
+      com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private StreamingAnalyzeContentRequest() {
+    participant_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new StreamingAnalyzeContentRequest();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private StreamingAnalyzeContentRequest(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              participant_ = s;
+              break;
+            }
+          case 18:
+            {
+              com.google.cloud.dialogflow.v2beta1.InputAudioConfig.Builder subBuilder = null;
+              if (configCase_ == 2) {
+                subBuilder =
+                    ((com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_).toBuilder();
+              }
+              config_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.InputAudioConfig.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(
+                    (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_);
+                config_ = subBuilder.buildPartial();
+              }
+              configCase_ = 2;
+              break;
+            }
+          case 26:
+            {
+              com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder subBuilder = null;
+              if (configCase_ == 3) {
+                subBuilder =
+                    ((com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_).toBuilder();
+              }
+              config_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.InputTextConfig.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom((com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_);
+                config_ = subBuilder.buildPartial();
+              }
+              configCase_ = 3;
+              break;
+            }
+          case 34:
+            {
+              com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.Builder subBuilder = null;
+              if (replyAudioConfig_ != null) {
+                subBuilder = replyAudioConfig_.toBuilder();
+              }
+              replyAudioConfig_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(replyAudioConfig_);
+                replyAudioConfig_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 42:
+            {
+              input_ = input.readBytes();
+              inputCase_ = 5;
+              break;
+            }
+          case 50:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+              inputCase_ = 6;
+              input_ = s;
+              break;
+            }
+          case 58:
+            {
+              com.google.cloud.dialogflow.v2beta1.QueryParameters.Builder subBuilder = null;
+              if (queryParams_ != null) {
+                subBuilder = queryParams_.toBuilder();
+              }
+              queryParams_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.QueryParameters.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(queryParams_);
+                queryParams_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 66:
+            {
+              com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.Builder subBuilder = null;
+              if (assistQueryParams_ != null) {
+                subBuilder = assistQueryParams_.toBuilder();
+              }
+              assistQueryParams_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(assistQueryParams_);
+                assistQueryParams_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 74:
+            {
+              com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.Builder subBuilder = null;
+              if (inputCase_ == 9) {
+                subBuilder =
+                    ((com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_).toBuilder();
+              }
+              input_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(
+                    (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_);
+                input_ = subBuilder.buildPartial();
+              }
+              inputCase_ = 9;
+              break;
+            }
+          case 96:
+            {
+              enablePartialAutomatedAgentReply_ = input.readBool();
+              break;
+            }
+          case 106:
+            {
+              com.google.protobuf.Struct.Builder subBuilder = null;
+              if (cxParameters_ != null) {
+                subBuilder = cxParameters_.toBuilder();
+              }
+              cxParameters_ =
+                  input.readMessage(com.google.protobuf.Struct.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(cxParameters_);
+                cxParameters_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+        .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+        .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.class,
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.Builder.class);
+  }
+
+  private int configCase_ = 0;
+  private java.lang.Object config_;
+
+  public enum ConfigCase
+      implements
+          com.google.protobuf.Internal.EnumLite,
+          com.google.protobuf.AbstractMessage.InternalOneOfEnum {
+    AUDIO_CONFIG(2),
+    TEXT_CONFIG(3),
+    CONFIG_NOT_SET(0);
+    private final int value;
+
+    private ConfigCase(int value) {
+      this.value = value;
+    }
+    /**
+     * @param value The number of the enum to look for.
+     * @return The enum associated with the given number.
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static ConfigCase valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static ConfigCase forNumber(int value) {
+      switch (value) {
+        case 2:
+          return AUDIO_CONFIG;
+        case 3:
+          return TEXT_CONFIG;
+        case 0:
+          return CONFIG_NOT_SET;
+        default:
+          return null;
+      }
+    }
+
+    public int getNumber() {
+      return this.value;
+    }
+  };
+
+  public ConfigCase getConfigCase() {
+    return ConfigCase.forNumber(configCase_);
+  }
+
+  private int inputCase_ = 0;
+  private java.lang.Object input_;
+
+  public enum InputCase
+      implements
+          com.google.protobuf.Internal.EnumLite,
+          com.google.protobuf.AbstractMessage.InternalOneOfEnum {
+    INPUT_AUDIO(5),
+    INPUT_TEXT(6),
+    INPUT_DTMF(9),
+    INPUT_NOT_SET(0);
+    private final int value;
+
+    private InputCase(int value) {
+      this.value = value;
+    }
+    /**
+     * @param value The number of the enum to look for.
+     * @return The enum associated with the given number.
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static InputCase valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static InputCase forNumber(int value) {
+      switch (value) {
+        case 5:
+          return INPUT_AUDIO;
+        case 6:
+          return INPUT_TEXT;
+        case 9:
+          return INPUT_DTMF;
+        case 0:
+          return INPUT_NOT_SET;
+        default:
+          return null;
+      }
+    }
+
+    public int getNumber() {
+      return this.value;
+    }
+  };
+
+  public InputCase getInputCase() {
+    return InputCase.forNumber(inputCase_);
+  }
+
+  public static final int PARTICIPANT_FIELD_NUMBER = 1;
+  private volatile java.lang.Object participant_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the participant this text comes from.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The participant.
+   */
+  @java.lang.Override
+  public java.lang.String getParticipant() {
+    java.lang.Object ref = participant_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      participant_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the participant this text comes from.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for participant.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getParticipantBytes() {
+    java.lang.Object ref = participant_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      participant_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int AUDIO_CONFIG_FIELD_NUMBER = 2;
+  /**
+   *
+   *
+   * <pre>
+   * Instructs the speech recognizer how to process the speech audio.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+   *
+   * @return Whether the audioConfig field is set.
+   */
+  @java.lang.Override
+  public boolean hasAudioConfig() {
+    return configCase_ == 2;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Instructs the speech recognizer how to process the speech audio.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+   *
+   * @return The audioConfig.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.InputAudioConfig getAudioConfig() {
+    if (configCase_ == 2) {
+      return (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.InputAudioConfig.getDefaultInstance();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Instructs the speech recognizer how to process the speech audio.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.InputAudioConfigOrBuilder getAudioConfigOrBuilder() {
+    if (configCase_ == 2) {
+      return (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.InputAudioConfig.getDefaultInstance();
+  }
+
+  public static final int TEXT_CONFIG_FIELD_NUMBER = 3;
+  /**
+   *
+   *
+   * <pre>
+   * The natural language text to be processed.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+   *
+   * @return Whether the textConfig field is set.
+   */
+  @java.lang.Override
+  public boolean hasTextConfig() {
+    return configCase_ == 3;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The natural language text to be processed.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+   *
+   * @return The textConfig.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.InputTextConfig getTextConfig() {
+    if (configCase_ == 3) {
+      return (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The natural language text to be processed.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.InputTextConfigOrBuilder getTextConfigOrBuilder() {
+    if (configCase_ == 3) {
+      return (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance();
+  }
+
+  public static final int REPLY_AUDIO_CONFIG_FIELD_NUMBER = 4;
+  private com.google.cloud.dialogflow.v2beta1.OutputAudioConfig replyAudioConfig_;
+  /**
+   *
+   *
+   * <pre>
+   * Speech synthesis configuration.
+   * The speech synthesis settings for a virtual agent that may be configured
+   * for the associated conversation profile are not used when calling
+   * StreamingAnalyzeContent. If this configuration is not supplied, speech
+   * synthesis is disabled.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+   *
+   * @return Whether the replyAudioConfig field is set.
+   */
+  @java.lang.Override
+  public boolean hasReplyAudioConfig() {
+    return replyAudioConfig_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Speech synthesis configuration.
+   * The speech synthesis settings for a virtual agent that may be configured
+   * for the associated conversation profile are not used when calling
+   * StreamingAnalyzeContent. If this configuration is not supplied, speech
+   * synthesis is disabled.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+   *
+   * @return The replyAudioConfig.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.OutputAudioConfig getReplyAudioConfig() {
+    return replyAudioConfig_ == null
+        ? com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.getDefaultInstance()
+        : replyAudioConfig_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Speech synthesis configuration.
+   * The speech synthesis settings for a virtual agent that may be configured
+   * for the associated conversation profile are not used when calling
+   * StreamingAnalyzeContent. If this configuration is not supplied, speech
+   * synthesis is disabled.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.OutputAudioConfigOrBuilder
+      getReplyAudioConfigOrBuilder() {
+    return getReplyAudioConfig();
+  }
+
+  public static final int INPUT_AUDIO_FIELD_NUMBER = 5;
+  /**
+   *
+   *
+   * <pre>
+   * The input audio content to be recognized. Must be sent if `audio_config`
+   * is set in the first message. The complete audio over all streaming
+   * messages must not exceed 1 minute.
+   * </pre>
+   *
+   * <code>bytes input_audio = 5;</code>
+   *
+   * @return Whether the inputAudio field is set.
+   */
+  @java.lang.Override
+  public boolean hasInputAudio() {
+    return inputCase_ == 5;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The input audio content to be recognized. Must be sent if `audio_config`
+   * is set in the first message. The complete audio over all streaming
+   * messages must not exceed 1 minute.
+   * </pre>
+   *
+   * <code>bytes input_audio = 5;</code>
+   *
+   * @return The inputAudio.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getInputAudio() {
+    if (inputCase_ == 5) {
+      return (com.google.protobuf.ByteString) input_;
+    }
+    return com.google.protobuf.ByteString.EMPTY;
+  }
+
+  public static final int INPUT_TEXT_FIELD_NUMBER = 6;
+  /**
+   *
+   *
+   * <pre>
+   * The UTF-8 encoded natural language text to be processed. Must be sent if
+   * `text_config` is set in the first message. Text length must not exceed
+   * 256 bytes. The `input_text` field can be only sent once.
+   * </pre>
+   *
+   * <code>string input_text = 6;</code>
+   *
+   * @return Whether the inputText field is set.
+   */
+  public boolean hasInputText() {
+    return inputCase_ == 6;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The UTF-8 encoded natural language text to be processed. Must be sent if
+   * `text_config` is set in the first message. Text length must not exceed
+   * 256 bytes. The `input_text` field can be only sent once.
+   * </pre>
+   *
+   * <code>string input_text = 6;</code>
+   *
+   * @return The inputText.
+   */
+  public java.lang.String getInputText() {
+    java.lang.Object ref = "";
+    if (inputCase_ == 6) {
+      ref = input_;
+    }
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      if (inputCase_ == 6) {
+        input_ = s;
+      }
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The UTF-8 encoded natural language text to be processed. Must be sent if
+   * `text_config` is set in the first message. Text length must not exceed
+   * 256 bytes. The `input_text` field can be only sent once.
+   * </pre>
+   *
+   * <code>string input_text = 6;</code>
+   *
+   * @return The bytes for inputText.
+   */
+  public com.google.protobuf.ByteString getInputTextBytes() {
+    java.lang.Object ref = "";
+    if (inputCase_ == 6) {
+      ref = input_;
+    }
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      if (inputCase_ == 6) {
+        input_ = b;
+      }
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int INPUT_DTMF_FIELD_NUMBER = 9;
+  /**
+   *
+   *
+   * <pre>
+   * The DTMF digits used to invoke intent and fill in parameter value.
+   * This input is ignored if the previous response indicated that DTMF input
+   * is not accepted.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+   *
+   * @return Whether the inputDtmf field is set.
+   */
+  @java.lang.Override
+  public boolean hasInputDtmf() {
+    return inputCase_ == 9;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The DTMF digits used to invoke intent and fill in parameter value.
+   * This input is ignored if the previous response indicated that DTMF input
+   * is not accepted.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+   *
+   * @return The inputDtmf.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents getInputDtmf() {
+    if (inputCase_ == 9) {
+      return (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.getDefaultInstance();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The DTMF digits used to invoke intent and fill in parameter value.
+   * This input is ignored if the previous response indicated that DTMF input
+   * is not accepted.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEventsOrBuilder getInputDtmfOrBuilder() {
+    if (inputCase_ == 9) {
+      return (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_;
+    }
+    return com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.getDefaultInstance();
+  }
+
+  public static final int QUERY_PARAMS_FIELD_NUMBER = 7;
+  private com.google.cloud.dialogflow.v2beta1.QueryParameters queryParams_;
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a Dialogflow virtual-agent query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+   *
+   * @return Whether the queryParams field is set.
+   */
+  @java.lang.Override
+  public boolean hasQueryParams() {
+    return queryParams_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a Dialogflow virtual-agent query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+   *
+   * @return The queryParams.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.QueryParameters getQueryParams() {
+    return queryParams_ == null
+        ? com.google.cloud.dialogflow.v2beta1.QueryParameters.getDefaultInstance()
+        : queryParams_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a Dialogflow virtual-agent query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.QueryParametersOrBuilder getQueryParamsOrBuilder() {
+    return getQueryParams();
+  }
+
+  public static final int ASSIST_QUERY_PARAMS_FIELD_NUMBER = 8;
+  private com.google.cloud.dialogflow.v2beta1.AssistQueryParameters assistQueryParams_;
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a human assist query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+   *
+   * @return Whether the assistQueryParams field is set.
+   */
+  @java.lang.Override
+  public boolean hasAssistQueryParams() {
+    return assistQueryParams_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a human assist query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+   *
+   * @return The assistQueryParams.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.AssistQueryParameters getAssistQueryParams() {
+    return assistQueryParams_ == null
+        ? com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.getDefaultInstance()
+        : assistQueryParams_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a human assist query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.AssistQueryParametersOrBuilder
+      getAssistQueryParamsOrBuilder() {
+    return getAssistQueryParams();
+  }
+
+  public static final int CX_PARAMETERS_FIELD_NUMBER = 13;
+  private com.google.protobuf.Struct cxParameters_;
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+   *
+   * @return Whether the cxParameters field is set.
+   */
+  @java.lang.Override
+  public boolean hasCxParameters() {
+    return cxParameters_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+   *
+   * @return The cxParameters.
+   */
+  @java.lang.Override
+  public com.google.protobuf.Struct getCxParameters() {
+    return cxParameters_ == null ? com.google.protobuf.Struct.getDefaultInstance() : cxParameters_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+   */
+  @java.lang.Override
+  public com.google.protobuf.StructOrBuilder getCxParametersOrBuilder() {
+    return getCxParameters();
+  }
+
+  public static final int ENABLE_PARTIAL_AUTOMATED_AGENT_REPLY_FIELD_NUMBER = 12;
+  private boolean enablePartialAutomatedAgentReply_;
+  /**
+   *
+   *
+   * <pre>
+   * Enable partial virtual agent responses. If this flag is not enabled,
+   * response stream still contains only one final response even if some
+   * `Fulfillment`s in Dialogflow virtual agent have been configured to return
+   * partial responses.
+   * </pre>
+   *
+   * <code>bool enable_partial_automated_agent_reply = 12;</code>
+   *
+   * @return The enablePartialAutomatedAgentReply.
+   */
+  @java.lang.Override
+  public boolean getEnablePartialAutomatedAgentReply() {
+    return enablePartialAutomatedAgentReply_;
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(participant_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, participant_);
+    }
+    if (configCase_ == 2) {
+      output.writeMessage(2, (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_);
+    }
+    if (configCase_ == 3) {
+      output.writeMessage(3, (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_);
+    }
+    if (replyAudioConfig_ != null) {
+      output.writeMessage(4, getReplyAudioConfig());
+    }
+    if (inputCase_ == 5) {
+      output.writeBytes(5, (com.google.protobuf.ByteString) input_);
+    }
+    if (inputCase_ == 6) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 6, input_);
+    }
+    if (queryParams_ != null) {
+      output.writeMessage(7, getQueryParams());
+    }
+    if (assistQueryParams_ != null) {
+      output.writeMessage(8, getAssistQueryParams());
+    }
+    if (inputCase_ == 9) {
+      output.writeMessage(9, (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_);
+    }
+    if (enablePartialAutomatedAgentReply_ != false) {
+      output.writeBool(12, enablePartialAutomatedAgentReply_);
+    }
+    if (cxParameters_ != null) {
+      output.writeMessage(13, getCxParameters());
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(participant_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, participant_);
+    }
+    if (configCase_ == 2) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              2, (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_);
+    }
+    if (configCase_ == 3) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              3, (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_);
+    }
+    if (replyAudioConfig_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getReplyAudioConfig());
+    }
+    if (inputCase_ == 5) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeBytesSize(
+              5, (com.google.protobuf.ByteString) input_);
+    }
+    if (inputCase_ == 6) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, input_);
+    }
+    if (queryParams_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(7, getQueryParams());
+    }
+    if (assistQueryParams_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(8, getAssistQueryParams());
+    }
+    if (inputCase_ == 9) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              9, (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_);
+    }
+    if (enablePartialAutomatedAgentReply_ != false) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeBoolSize(
+              12, enablePartialAutomatedAgentReply_);
+    }
+    if (cxParameters_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(13, getCxParameters());
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest)) {
+      return super.equals(obj);
+    }
+    com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest other =
+        (com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest) obj;
+
+    if (!getParticipant().equals(other.getParticipant())) return false;
+    if (hasReplyAudioConfig() != other.hasReplyAudioConfig()) return false;
+    if (hasReplyAudioConfig()) {
+      if (!getReplyAudioConfig().equals(other.getReplyAudioConfig())) return false;
+    }
+    if (hasQueryParams() != other.hasQueryParams()) return false;
+    if (hasQueryParams()) {
+      if (!getQueryParams().equals(other.getQueryParams())) return false;
+    }
+    if (hasAssistQueryParams() != other.hasAssistQueryParams()) return false;
+    if (hasAssistQueryParams()) {
+      if (!getAssistQueryParams().equals(other.getAssistQueryParams())) return false;
+    }
+    if (hasCxParameters() != other.hasCxParameters()) return false;
+    if (hasCxParameters()) {
+      if (!getCxParameters().equals(other.getCxParameters())) return false;
+    }
+    if (getEnablePartialAutomatedAgentReply() != other.getEnablePartialAutomatedAgentReply())
+      return false;
+    if (!getConfigCase().equals(other.getConfigCase())) return false;
+    switch (configCase_) {
+      case 2:
+        if (!getAudioConfig().equals(other.getAudioConfig())) return false;
+        break;
+      case 3:
+        if (!getTextConfig().equals(other.getTextConfig())) return false;
+        break;
+      case 0:
+      default:
+    }
+    if (!getInputCase().equals(other.getInputCase())) return false;
+    switch (inputCase_) {
+      case 5:
+        if (!getInputAudio().equals(other.getInputAudio())) return false;
+        break;
+      case 6:
+        if (!getInputText().equals(other.getInputText())) return false;
+        break;
+      case 9:
+        if (!getInputDtmf().equals(other.getInputDtmf())) return false;
+        break;
+      case 0:
+      default:
+    }
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + PARTICIPANT_FIELD_NUMBER;
+    hash = (53 * hash) + getParticipant().hashCode();
+    if (hasReplyAudioConfig()) {
+      hash = (37 * hash) + REPLY_AUDIO_CONFIG_FIELD_NUMBER;
+      hash = (53 * hash) + getReplyAudioConfig().hashCode();
+    }
+    if (hasQueryParams()) {
+      hash = (37 * hash) + QUERY_PARAMS_FIELD_NUMBER;
+      hash = (53 * hash) + getQueryParams().hashCode();
+    }
+    if (hasAssistQueryParams()) {
+      hash = (37 * hash) + ASSIST_QUERY_PARAMS_FIELD_NUMBER;
+      hash = (53 * hash) + getAssistQueryParams().hashCode();
+    }
+    if (hasCxParameters()) {
+      hash = (37 * hash) + CX_PARAMETERS_FIELD_NUMBER;
+      hash = (53 * hash) + getCxParameters().hashCode();
+    }
+    hash = (37 * hash) + ENABLE_PARTIAL_AUTOMATED_AGENT_REPLY_FIELD_NUMBER;
+    hash =
+        (53 * hash)
+            + com.google.protobuf.Internal.hashBoolean(getEnablePartialAutomatedAgentReply());
+    switch (configCase_) {
+      case 2:
+        hash = (37 * hash) + AUDIO_CONFIG_FIELD_NUMBER;
+        hash = (53 * hash) + getAudioConfig().hashCode();
+        break;
+      case 3:
+        hash = (37 * hash) + TEXT_CONFIG_FIELD_NUMBER;
+        hash = (53 * hash) + getTextConfig().hashCode();
+        break;
+      case 0:
+      default:
+    }
+    switch (inputCase_) {
+      case 5:
+        hash = (37 * hash) + INPUT_AUDIO_FIELD_NUMBER;
+        hash = (53 * hash) + getInputAudio().hashCode();
+        break;
+      case 6:
+        hash = (37 * hash) + INPUT_TEXT_FIELD_NUMBER;
+        hash = (53 * hash) + getInputText().hashCode();
+        break;
+      case 9:
+        hash = (37 * hash) + INPUT_DTMF_FIELD_NUMBER;
+        hash = (53 * hash) + getInputDtmf().hashCode();
+        break;
+      case 0:
+      default:
+    }
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      byte[] data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+      parseDelimitedFrom(java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+      parseDelimitedFrom(
+          java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The top-level message sent by the client to the
+   * [Participants.StreamingAnalyzeContent][google.cloud.dialogflow.v2beta1.Participants.StreamingAnalyzeContent] method.
+   * Multiple request messages should be sent in order:
+   * 1.  The first message must contain
+   *     [participant][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.participant],
+   *     [config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] and optionally
+   *     [query_params][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.query_params]. If you want
+   *     to receive an audio response, it should also contain
+   *     [reply_audio_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.reply_audio_config].
+   *     The message must not contain
+   *     [input][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input].
+   * 2.  If [config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] in the first message
+   *     was set to [audio_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.audio_config],
+   *     all subsequent messages must contain
+   *     [input_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_audio] to continue
+   *     with Speech recognition.
+   *     If you decide to rather analyze text input after you already started
+   *     Speech recognition, please send a message with
+   *     [StreamingAnalyzeContentRequest.input_text][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_text].
+   *     However, note that:
+   *     * Dialogflow will bill you for the audio so far.
+   *     * Dialogflow discards all Speech recognition results in favor of the
+   *       text input.
+   *  3. If [StreamingAnalyzeContentRequest.config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] in the first message was set
+   *    to [StreamingAnalyzeContentRequest.text_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.text_config], then the second message
+   *    must contain only [input_text][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_text].
+   *    Moreover, you must not send more than two messages.
+   *  After you sent all input, you must half-close or abort the request stream.
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest)
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequestOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.class,
+              com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.Builder.class);
+    }
+
+    // Construct using
+    // com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      participant_ = "";
+
+      if (replyAudioConfigBuilder_ == null) {
+        replyAudioConfig_ = null;
+      } else {
+        replyAudioConfig_ = null;
+        replyAudioConfigBuilder_ = null;
+      }
+      if (queryParamsBuilder_ == null) {
+        queryParams_ = null;
+      } else {
+        queryParams_ = null;
+        queryParamsBuilder_ = null;
+      }
+      if (assistQueryParamsBuilder_ == null) {
+        assistQueryParams_ = null;
+      } else {
+        assistQueryParams_ = null;
+        assistQueryParamsBuilder_ = null;
+      }
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = null;
+      } else {
+        cxParameters_ = null;
+        cxParametersBuilder_ = null;
+      }
+      enablePartialAutomatedAgentReply_ = false;
+
+      configCase_ = 0;
+      config_ = null;
+      inputCase_ = 0;
+      input_ = null;
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentRequest_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+        getDefaultInstanceForType() {
+      return com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+          .getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest build() {
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest buildPartial() {
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest result =
+          new com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest(this);
+      result.participant_ = participant_;
+      if (configCase_ == 2) {
+        if (audioConfigBuilder_ == null) {
+          result.config_ = config_;
+        } else {
+          result.config_ = audioConfigBuilder_.build();
+        }
+      }
+      if (configCase_ == 3) {
+        if (textConfigBuilder_ == null) {
+          result.config_ = config_;
+        } else {
+          result.config_ = textConfigBuilder_.build();
+        }
+      }
+      if (replyAudioConfigBuilder_ == null) {
+        result.replyAudioConfig_ = replyAudioConfig_;
+      } else {
+        result.replyAudioConfig_ = replyAudioConfigBuilder_.build();
+      }
+      if (inputCase_ == 5) {
+        result.input_ = input_;
+      }
+      if (inputCase_ == 6) {
+        result.input_ = input_;
+      }
+      if (inputCase_ == 9) {
+        if (inputDtmfBuilder_ == null) {
+          result.input_ = input_;
+        } else {
+          result.input_ = inputDtmfBuilder_.build();
+        }
+      }
+      if (queryParamsBuilder_ == null) {
+        result.queryParams_ = queryParams_;
+      } else {
+        result.queryParams_ = queryParamsBuilder_.build();
+      }
+      if (assistQueryParamsBuilder_ == null) {
+        result.assistQueryParams_ = assistQueryParams_;
+      } else {
+        result.assistQueryParams_ = assistQueryParamsBuilder_.build();
+      }
+      if (cxParametersBuilder_ == null) {
+        result.cxParameters_ = cxParameters_;
+      } else {
+        result.cxParameters_ = cxParametersBuilder_.build();
+      }
+      result.enablePartialAutomatedAgentReply_ = enablePartialAutomatedAgentReply_;
+      result.configCase_ = configCase_;
+      result.inputCase_ = inputCase_;
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest) {
+        return mergeFrom(
+            (com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(
+        com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest other) {
+      if (other
+          == com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+              .getDefaultInstance()) return this;
+      if (!other.getParticipant().isEmpty()) {
+        participant_ = other.participant_;
+        onChanged();
+      }
+      if (other.hasReplyAudioConfig()) {
+        mergeReplyAudioConfig(other.getReplyAudioConfig());
+      }
+      if (other.hasQueryParams()) {
+        mergeQueryParams(other.getQueryParams());
+      }
+      if (other.hasAssistQueryParams()) {
+        mergeAssistQueryParams(other.getAssistQueryParams());
+      }
+      if (other.hasCxParameters()) {
+        mergeCxParameters(other.getCxParameters());
+      }
+      if (other.getEnablePartialAutomatedAgentReply() != false) {
+        setEnablePartialAutomatedAgentReply(other.getEnablePartialAutomatedAgentReply());
+      }
+      switch (other.getConfigCase()) {
+        case AUDIO_CONFIG:
+          {
+            mergeAudioConfig(other.getAudioConfig());
+            break;
+          }
+        case TEXT_CONFIG:
+          {
+            mergeTextConfig(other.getTextConfig());
+            break;
+          }
+        case CONFIG_NOT_SET:
+          {
+            break;
+          }
+      }
+      switch (other.getInputCase()) {
+        case INPUT_AUDIO:
+          {
+            setInputAudio(other.getInputAudio());
+            break;
+          }
+        case INPUT_TEXT:
+          {
+            inputCase_ = 6;
+            input_ = other.input_;
+            onChanged();
+            break;
+          }
+        case INPUT_DTMF:
+          {
+            mergeInputDtmf(other.getInputDtmf());
+            break;
+          }
+        case INPUT_NOT_SET:
+          {
+            break;
+          }
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest)
+                e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private int configCase_ = 0;
+    private java.lang.Object config_;
+
+    public ConfigCase getConfigCase() {
+      return ConfigCase.forNumber(configCase_);
+    }
+
+    public Builder clearConfig() {
+      configCase_ = 0;
+      config_ = null;
+      onChanged();
+      return this;
+    }
+
+    private int inputCase_ = 0;
+    private java.lang.Object input_;
+
+    public InputCase getInputCase() {
+      return InputCase.forNumber(inputCase_);
+    }
+
+    public Builder clearInput() {
+      inputCase_ = 0;
+      input_ = null;
+      onChanged();
+      return this;
+    }
+
+    private java.lang.Object participant_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the participant this text comes from.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The participant.
+     */
+    public java.lang.String getParticipant() {
+      java.lang.Object ref = participant_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        participant_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the participant this text comes from.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The bytes for participant.
+     */
+    public com.google.protobuf.ByteString getParticipantBytes() {
+      java.lang.Object ref = participant_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        participant_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the participant this text comes from.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The participant to set.
+     * @return This builder for chaining.
+     */
+    public Builder setParticipant(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      participant_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the participant this text comes from.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearParticipant() {
+
+      participant_ = getDefaultInstance().getParticipant();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the participant this text comes from.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The bytes for participant to set.
+     * @return This builder for chaining.
+     */
+    public Builder setParticipantBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      participant_ = value;
+      onChanged();
+      return this;
+    }
+
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.InputAudioConfig,
+            com.google.cloud.dialogflow.v2beta1.InputAudioConfig.Builder,
+            com.google.cloud.dialogflow.v2beta1.InputAudioConfigOrBuilder>
+        audioConfigBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     *
+     * @return Whether the audioConfig field is set.
+     */
+    @java.lang.Override
+    public boolean hasAudioConfig() {
+      return configCase_ == 2;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     *
+     * @return The audioConfig.
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.InputAudioConfig getAudioConfig() {
+      if (audioConfigBuilder_ == null) {
+        if (configCase_ == 2) {
+          return (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.InputAudioConfig.getDefaultInstance();
+      } else {
+        if (configCase_ == 2) {
+          return audioConfigBuilder_.getMessage();
+        }
+        return com.google.cloud.dialogflow.v2beta1.InputAudioConfig.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     */
+    public Builder setAudioConfig(com.google.cloud.dialogflow.v2beta1.InputAudioConfig value) {
+      if (audioConfigBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        config_ = value;
+        onChanged();
+      } else {
+        audioConfigBuilder_.setMessage(value);
+      }
+      configCase_ = 2;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     */
+    public Builder setAudioConfig(
+        com.google.cloud.dialogflow.v2beta1.InputAudioConfig.Builder builderForValue) {
+      if (audioConfigBuilder_ == null) {
+        config_ = builderForValue.build();
+        onChanged();
+      } else {
+        audioConfigBuilder_.setMessage(builderForValue.build());
+      }
+      configCase_ = 2;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     */
+    public Builder mergeAudioConfig(com.google.cloud.dialogflow.v2beta1.InputAudioConfig value) {
+      if (audioConfigBuilder_ == null) {
+        if (configCase_ == 2
+            && config_
+                != com.google.cloud.dialogflow.v2beta1.InputAudioConfig.getDefaultInstance()) {
+          config_ =
+              com.google.cloud.dialogflow.v2beta1.InputAudioConfig.newBuilder(
+                      (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          config_ = value;
+        }
+        onChanged();
+      } else {
+        if (configCase_ == 2) {
+          audioConfigBuilder_.mergeFrom(value);
+        } else {
+          audioConfigBuilder_.setMessage(value);
+        }
+      }
+      configCase_ = 2;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     */
+    public Builder clearAudioConfig() {
+      if (audioConfigBuilder_ == null) {
+        if (configCase_ == 2) {
+          configCase_ = 0;
+          config_ = null;
+          onChanged();
+        }
+      } else {
+        if (configCase_ == 2) {
+          configCase_ = 0;
+          config_ = null;
+        }
+        audioConfigBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.InputAudioConfig.Builder getAudioConfigBuilder() {
+      return getAudioConfigFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.InputAudioConfigOrBuilder getAudioConfigOrBuilder() {
+      if ((configCase_ == 2) && (audioConfigBuilder_ != null)) {
+        return audioConfigBuilder_.getMessageOrBuilder();
+      } else {
+        if (configCase_ == 2) {
+          return (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.InputAudioConfig.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Instructs the speech recognizer how to process the speech audio.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.InputAudioConfig,
+            com.google.cloud.dialogflow.v2beta1.InputAudioConfig.Builder,
+            com.google.cloud.dialogflow.v2beta1.InputAudioConfigOrBuilder>
+        getAudioConfigFieldBuilder() {
+      if (audioConfigBuilder_ == null) {
+        if (!(configCase_ == 2)) {
+          config_ = com.google.cloud.dialogflow.v2beta1.InputAudioConfig.getDefaultInstance();
+        }
+        audioConfigBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.InputAudioConfig,
+                com.google.cloud.dialogflow.v2beta1.InputAudioConfig.Builder,
+                com.google.cloud.dialogflow.v2beta1.InputAudioConfigOrBuilder>(
+                (com.google.cloud.dialogflow.v2beta1.InputAudioConfig) config_,
+                getParentForChildren(),
+                isClean());
+        config_ = null;
+      }
+      configCase_ = 2;
+      onChanged();
+      ;
+      return audioConfigBuilder_;
+    }
+
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.InputTextConfig,
+            com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder,
+            com.google.cloud.dialogflow.v2beta1.InputTextConfigOrBuilder>
+        textConfigBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     *
+     * @return Whether the textConfig field is set.
+     */
+    @java.lang.Override
+    public boolean hasTextConfig() {
+      return configCase_ == 3;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     *
+     * @return The textConfig.
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.InputTextConfig getTextConfig() {
+      if (textConfigBuilder_ == null) {
+        if (configCase_ == 3) {
+          return (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance();
+      } else {
+        if (configCase_ == 3) {
+          return textConfigBuilder_.getMessage();
+        }
+        return com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     */
+    public Builder setTextConfig(com.google.cloud.dialogflow.v2beta1.InputTextConfig value) {
+      if (textConfigBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        config_ = value;
+        onChanged();
+      } else {
+        textConfigBuilder_.setMessage(value);
+      }
+      configCase_ = 3;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     */
+    public Builder setTextConfig(
+        com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder builderForValue) {
+      if (textConfigBuilder_ == null) {
+        config_ = builderForValue.build();
+        onChanged();
+      } else {
+        textConfigBuilder_.setMessage(builderForValue.build());
+      }
+      configCase_ = 3;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     */
+    public Builder mergeTextConfig(com.google.cloud.dialogflow.v2beta1.InputTextConfig value) {
+      if (textConfigBuilder_ == null) {
+        if (configCase_ == 3
+            && config_
+                != com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance()) {
+          config_ =
+              com.google.cloud.dialogflow.v2beta1.InputTextConfig.newBuilder(
+                      (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          config_ = value;
+        }
+        onChanged();
+      } else {
+        if (configCase_ == 3) {
+          textConfigBuilder_.mergeFrom(value);
+        } else {
+          textConfigBuilder_.setMessage(value);
+        }
+      }
+      configCase_ = 3;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     */
+    public Builder clearTextConfig() {
+      if (textConfigBuilder_ == null) {
+        if (configCase_ == 3) {
+          configCase_ = 0;
+          config_ = null;
+          onChanged();
+        }
+      } else {
+        if (configCase_ == 3) {
+          configCase_ = 0;
+          config_ = null;
+        }
+        textConfigBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder getTextConfigBuilder() {
+      return getTextConfigFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.InputTextConfigOrBuilder getTextConfigOrBuilder() {
+      if ((configCase_ == 3) && (textConfigBuilder_ != null)) {
+        return textConfigBuilder_.getMessageOrBuilder();
+      } else {
+        if (configCase_ == 3) {
+          return (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The natural language text to be processed.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.InputTextConfig,
+            com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder,
+            com.google.cloud.dialogflow.v2beta1.InputTextConfigOrBuilder>
+        getTextConfigFieldBuilder() {
+      if (textConfigBuilder_ == null) {
+        if (!(configCase_ == 3)) {
+          config_ = com.google.cloud.dialogflow.v2beta1.InputTextConfig.getDefaultInstance();
+        }
+        textConfigBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.InputTextConfig,
+                com.google.cloud.dialogflow.v2beta1.InputTextConfig.Builder,
+                com.google.cloud.dialogflow.v2beta1.InputTextConfigOrBuilder>(
+                (com.google.cloud.dialogflow.v2beta1.InputTextConfig) config_,
+                getParentForChildren(),
+                isClean());
+        config_ = null;
+      }
+      configCase_ = 3;
+      onChanged();
+      ;
+      return textConfigBuilder_;
+    }
+
+    private com.google.cloud.dialogflow.v2beta1.OutputAudioConfig replyAudioConfig_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.OutputAudioConfig,
+            com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.Builder,
+            com.google.cloud.dialogflow.v2beta1.OutputAudioConfigOrBuilder>
+        replyAudioConfigBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     *
+     * @return Whether the replyAudioConfig field is set.
+     */
+    public boolean hasReplyAudioConfig() {
+      return replyAudioConfigBuilder_ != null || replyAudioConfig_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     *
+     * @return The replyAudioConfig.
+     */
+    public com.google.cloud.dialogflow.v2beta1.OutputAudioConfig getReplyAudioConfig() {
+      if (replyAudioConfigBuilder_ == null) {
+        return replyAudioConfig_ == null
+            ? com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.getDefaultInstance()
+            : replyAudioConfig_;
+      } else {
+        return replyAudioConfigBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     */
+    public Builder setReplyAudioConfig(
+        com.google.cloud.dialogflow.v2beta1.OutputAudioConfig value) {
+      if (replyAudioConfigBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        replyAudioConfig_ = value;
+        onChanged();
+      } else {
+        replyAudioConfigBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     */
+    public Builder setReplyAudioConfig(
+        com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.Builder builderForValue) {
+      if (replyAudioConfigBuilder_ == null) {
+        replyAudioConfig_ = builderForValue.build();
+        onChanged();
+      } else {
+        replyAudioConfigBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     */
+    public Builder mergeReplyAudioConfig(
+        com.google.cloud.dialogflow.v2beta1.OutputAudioConfig value) {
+      if (replyAudioConfigBuilder_ == null) {
+        if (replyAudioConfig_ != null) {
+          replyAudioConfig_ =
+              com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.newBuilder(replyAudioConfig_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          replyAudioConfig_ = value;
+        }
+        onChanged();
+      } else {
+        replyAudioConfigBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     */
+    public Builder clearReplyAudioConfig() {
+      if (replyAudioConfigBuilder_ == null) {
+        replyAudioConfig_ = null;
+        onChanged();
+      } else {
+        replyAudioConfig_ = null;
+        replyAudioConfigBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.Builder
+        getReplyAudioConfigBuilder() {
+
+      onChanged();
+      return getReplyAudioConfigFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.OutputAudioConfigOrBuilder
+        getReplyAudioConfigOrBuilder() {
+      if (replyAudioConfigBuilder_ != null) {
+        return replyAudioConfigBuilder_.getMessageOrBuilder();
+      } else {
+        return replyAudioConfig_ == null
+            ? com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.getDefaultInstance()
+            : replyAudioConfig_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Speech synthesis configuration.
+     * The speech synthesis settings for a virtual agent that may be configured
+     * for the associated conversation profile are not used when calling
+     * StreamingAnalyzeContent. If this configuration is not supplied, speech
+     * synthesis is disabled.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.OutputAudioConfig,
+            com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.Builder,
+            com.google.cloud.dialogflow.v2beta1.OutputAudioConfigOrBuilder>
+        getReplyAudioConfigFieldBuilder() {
+      if (replyAudioConfigBuilder_ == null) {
+        replyAudioConfigBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.OutputAudioConfig,
+                com.google.cloud.dialogflow.v2beta1.OutputAudioConfig.Builder,
+                com.google.cloud.dialogflow.v2beta1.OutputAudioConfigOrBuilder>(
+                getReplyAudioConfig(), getParentForChildren(), isClean());
+        replyAudioConfig_ = null;
+      }
+      return replyAudioConfigBuilder_;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * The input audio content to be recognized. Must be sent if `audio_config`
+     * is set in the first message. The complete audio over all streaming
+     * messages must not exceed 1 minute.
+     * </pre>
+     *
+     * <code>bytes input_audio = 5;</code>
+     *
+     * @return Whether the inputAudio field is set.
+     */
+    public boolean hasInputAudio() {
+      return inputCase_ == 5;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The input audio content to be recognized. Must be sent if `audio_config`
+     * is set in the first message. The complete audio over all streaming
+     * messages must not exceed 1 minute.
+     * </pre>
+     *
+     * <code>bytes input_audio = 5;</code>
+     *
+     * @return The inputAudio.
+     */
+    public com.google.protobuf.ByteString getInputAudio() {
+      if (inputCase_ == 5) {
+        return (com.google.protobuf.ByteString) input_;
+      }
+      return com.google.protobuf.ByteString.EMPTY;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The input audio content to be recognized. Must be sent if `audio_config`
+     * is set in the first message. The complete audio over all streaming
+     * messages must not exceed 1 minute.
+     * </pre>
+     *
+     * <code>bytes input_audio = 5;</code>
+     *
+     * @param value The inputAudio to set.
+     * @return This builder for chaining.
+     */
+    public Builder setInputAudio(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      inputCase_ = 5;
+      input_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The input audio content to be recognized. Must be sent if `audio_config`
+     * is set in the first message. The complete audio over all streaming
+     * messages must not exceed 1 minute.
+     * </pre>
+     *
+     * <code>bytes input_audio = 5;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearInputAudio() {
+      if (inputCase_ == 5) {
+        inputCase_ = 0;
+        input_ = null;
+        onChanged();
+      }
+      return this;
+    }
+
+    /**
+     *
+     *
+     * <pre>
+     * The UTF-8 encoded natural language text to be processed. Must be sent if
+     * `text_config` is set in the first message. Text length must not exceed
+     * 256 bytes. The `input_text` field can be only sent once.
+     * </pre>
+     *
+     * <code>string input_text = 6;</code>
+     *
+     * @return Whether the inputText field is set.
+     */
+    @java.lang.Override
+    public boolean hasInputText() {
+      return inputCase_ == 6;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The UTF-8 encoded natural language text to be processed. Must be sent if
+     * `text_config` is set in the first message. Text length must not exceed
+     * 256 bytes. The `input_text` field can be only sent once.
+     * </pre>
+     *
+     * <code>string input_text = 6;</code>
+     *
+     * @return The inputText.
+     */
+    @java.lang.Override
+    public java.lang.String getInputText() {
+      java.lang.Object ref = "";
+      if (inputCase_ == 6) {
+        ref = input_;
+      }
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        if (inputCase_ == 6) {
+          input_ = s;
+        }
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The UTF-8 encoded natural language text to be processed. Must be sent if
+     * `text_config` is set in the first message. Text length must not exceed
+     * 256 bytes. The `input_text` field can be only sent once.
+     * </pre>
+     *
+     * <code>string input_text = 6;</code>
+     *
+     * @return The bytes for inputText.
+     */
+    @java.lang.Override
+    public com.google.protobuf.ByteString getInputTextBytes() {
+      java.lang.Object ref = "";
+      if (inputCase_ == 6) {
+        ref = input_;
+      }
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        if (inputCase_ == 6) {
+          input_ = b;
+        }
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The UTF-8 encoded natural language text to be processed. Must be sent if
+     * `text_config` is set in the first message. Text length must not exceed
+     * 256 bytes. The `input_text` field can be only sent once.
+     * </pre>
+     *
+     * <code>string input_text = 6;</code>
+     *
+     * @param value The inputText to set.
+     * @return This builder for chaining.
+     */
+    public Builder setInputText(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      inputCase_ = 6;
+      input_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The UTF-8 encoded natural language text to be processed. Must be sent if
+     * `text_config` is set in the first message. Text length must not exceed
+     * 256 bytes. The `input_text` field can be only sent once.
+     * </pre>
+     *
+     * <code>string input_text = 6;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearInputText() {
+      if (inputCase_ == 6) {
+        inputCase_ = 0;
+        input_ = null;
+        onChanged();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The UTF-8 encoded natural language text to be processed. Must be sent if
+     * `text_config` is set in the first message. Text length must not exceed
+     * 256 bytes. The `input_text` field can be only sent once.
+     * </pre>
+     *
+     * <code>string input_text = 6;</code>
+     *
+     * @param value The bytes for inputText to set.
+     * @return This builder for chaining.
+     */
+    public Builder setInputTextBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+      inputCase_ = 6;
+      input_ = value;
+      onChanged();
+      return this;
+    }
+
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents,
+            com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.Builder,
+            com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEventsOrBuilder>
+        inputDtmfBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     *
+     * @return Whether the inputDtmf field is set.
+     */
+    @java.lang.Override
+    public boolean hasInputDtmf() {
+      return inputCase_ == 9;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     *
+     * @return The inputDtmf.
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents getInputDtmf() {
+      if (inputDtmfBuilder_ == null) {
+        if (inputCase_ == 9) {
+          return (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.getDefaultInstance();
+      } else {
+        if (inputCase_ == 9) {
+          return inputDtmfBuilder_.getMessage();
+        }
+        return com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     */
+    public Builder setInputDtmf(com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents value) {
+      if (inputDtmfBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        input_ = value;
+        onChanged();
+      } else {
+        inputDtmfBuilder_.setMessage(value);
+      }
+      inputCase_ = 9;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     */
+    public Builder setInputDtmf(
+        com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.Builder builderForValue) {
+      if (inputDtmfBuilder_ == null) {
+        input_ = builderForValue.build();
+        onChanged();
+      } else {
+        inputDtmfBuilder_.setMessage(builderForValue.build());
+      }
+      inputCase_ = 9;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     */
+    public Builder mergeInputDtmf(com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents value) {
+      if (inputDtmfBuilder_ == null) {
+        if (inputCase_ == 9
+            && input_
+                != com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.getDefaultInstance()) {
+          input_ =
+              com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.newBuilder(
+                      (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          input_ = value;
+        }
+        onChanged();
+      } else {
+        if (inputCase_ == 9) {
+          inputDtmfBuilder_.mergeFrom(value);
+        } else {
+          inputDtmfBuilder_.setMessage(value);
+        }
+      }
+      inputCase_ = 9;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     */
+    public Builder clearInputDtmf() {
+      if (inputDtmfBuilder_ == null) {
+        if (inputCase_ == 9) {
+          inputCase_ = 0;
+          input_ = null;
+          onChanged();
+        }
+      } else {
+        if (inputCase_ == 9) {
+          inputCase_ = 0;
+          input_ = null;
+        }
+        inputDtmfBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.Builder getInputDtmfBuilder() {
+      return getInputDtmfFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEventsOrBuilder
+        getInputDtmfOrBuilder() {
+      if ((inputCase_ == 9) && (inputDtmfBuilder_ != null)) {
+        return inputDtmfBuilder_.getMessageOrBuilder();
+      } else {
+        if (inputCase_ == 9) {
+          return (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_;
+        }
+        return com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The DTMF digits used to invoke intent and fill in parameter value.
+     * This input is ignored if the previous response indicated that DTMF input
+     * is not accepted.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents,
+            com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.Builder,
+            com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEventsOrBuilder>
+        getInputDtmfFieldBuilder() {
+      if (inputDtmfBuilder_ == null) {
+        if (!(inputCase_ == 9)) {
+          input_ = com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.getDefaultInstance();
+        }
+        inputDtmfBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents,
+                com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents.Builder,
+                com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEventsOrBuilder>(
+                (com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents) input_,
+                getParentForChildren(),
+                isClean());
+        input_ = null;
+      }
+      inputCase_ = 9;
+      onChanged();
+      ;
+      return inputDtmfBuilder_;
+    }
+
+    private com.google.cloud.dialogflow.v2beta1.QueryParameters queryParams_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.QueryParameters,
+            com.google.cloud.dialogflow.v2beta1.QueryParameters.Builder,
+            com.google.cloud.dialogflow.v2beta1.QueryParametersOrBuilder>
+        queryParamsBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     *
+     * @return Whether the queryParams field is set.
+     */
+    public boolean hasQueryParams() {
+      return queryParamsBuilder_ != null || queryParams_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     *
+     * @return The queryParams.
+     */
+    public com.google.cloud.dialogflow.v2beta1.QueryParameters getQueryParams() {
+      if (queryParamsBuilder_ == null) {
+        return queryParams_ == null
+            ? com.google.cloud.dialogflow.v2beta1.QueryParameters.getDefaultInstance()
+            : queryParams_;
+      } else {
+        return queryParamsBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     */
+    public Builder setQueryParams(com.google.cloud.dialogflow.v2beta1.QueryParameters value) {
+      if (queryParamsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        queryParams_ = value;
+        onChanged();
+      } else {
+        queryParamsBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     */
+    public Builder setQueryParams(
+        com.google.cloud.dialogflow.v2beta1.QueryParameters.Builder builderForValue) {
+      if (queryParamsBuilder_ == null) {
+        queryParams_ = builderForValue.build();
+        onChanged();
+      } else {
+        queryParamsBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     */
+    public Builder mergeQueryParams(com.google.cloud.dialogflow.v2beta1.QueryParameters value) {
+      if (queryParamsBuilder_ == null) {
+        if (queryParams_ != null) {
+          queryParams_ =
+              com.google.cloud.dialogflow.v2beta1.QueryParameters.newBuilder(queryParams_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          queryParams_ = value;
+        }
+        onChanged();
+      } else {
+        queryParamsBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     */
+    public Builder clearQueryParams() {
+      if (queryParamsBuilder_ == null) {
+        queryParams_ = null;
+        onChanged();
+      } else {
+        queryParams_ = null;
+        queryParamsBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.QueryParameters.Builder getQueryParamsBuilder() {
+
+      onChanged();
+      return getQueryParamsFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.QueryParametersOrBuilder getQueryParamsOrBuilder() {
+      if (queryParamsBuilder_ != null) {
+        return queryParamsBuilder_.getMessageOrBuilder();
+      } else {
+        return queryParams_ == null
+            ? com.google.cloud.dialogflow.v2beta1.QueryParameters.getDefaultInstance()
+            : queryParams_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a Dialogflow virtual-agent query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.QueryParameters,
+            com.google.cloud.dialogflow.v2beta1.QueryParameters.Builder,
+            com.google.cloud.dialogflow.v2beta1.QueryParametersOrBuilder>
+        getQueryParamsFieldBuilder() {
+      if (queryParamsBuilder_ == null) {
+        queryParamsBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.QueryParameters,
+                com.google.cloud.dialogflow.v2beta1.QueryParameters.Builder,
+                com.google.cloud.dialogflow.v2beta1.QueryParametersOrBuilder>(
+                getQueryParams(), getParentForChildren(), isClean());
+        queryParams_ = null;
+      }
+      return queryParamsBuilder_;
+    }
+
+    private com.google.cloud.dialogflow.v2beta1.AssistQueryParameters assistQueryParams_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.AssistQueryParameters,
+            com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.Builder,
+            com.google.cloud.dialogflow.v2beta1.AssistQueryParametersOrBuilder>
+        assistQueryParamsBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     *
+     * @return Whether the assistQueryParams field is set.
+     */
+    public boolean hasAssistQueryParams() {
+      return assistQueryParamsBuilder_ != null || assistQueryParams_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     *
+     * @return The assistQueryParams.
+     */
+    public com.google.cloud.dialogflow.v2beta1.AssistQueryParameters getAssistQueryParams() {
+      if (assistQueryParamsBuilder_ == null) {
+        return assistQueryParams_ == null
+            ? com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.getDefaultInstance()
+            : assistQueryParams_;
+      } else {
+        return assistQueryParamsBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     */
+    public Builder setAssistQueryParams(
+        com.google.cloud.dialogflow.v2beta1.AssistQueryParameters value) {
+      if (assistQueryParamsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        assistQueryParams_ = value;
+        onChanged();
+      } else {
+        assistQueryParamsBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     */
+    public Builder setAssistQueryParams(
+        com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.Builder builderForValue) {
+      if (assistQueryParamsBuilder_ == null) {
+        assistQueryParams_ = builderForValue.build();
+        onChanged();
+      } else {
+        assistQueryParamsBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     */
+    public Builder mergeAssistQueryParams(
+        com.google.cloud.dialogflow.v2beta1.AssistQueryParameters value) {
+      if (assistQueryParamsBuilder_ == null) {
+        if (assistQueryParams_ != null) {
+          assistQueryParams_ =
+              com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.newBuilder(
+                      assistQueryParams_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          assistQueryParams_ = value;
+        }
+        onChanged();
+      } else {
+        assistQueryParamsBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     */
+    public Builder clearAssistQueryParams() {
+      if (assistQueryParamsBuilder_ == null) {
+        assistQueryParams_ = null;
+        onChanged();
+      } else {
+        assistQueryParams_ = null;
+        assistQueryParamsBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.Builder
+        getAssistQueryParamsBuilder() {
+
+      onChanged();
+      return getAssistQueryParamsFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.AssistQueryParametersOrBuilder
+        getAssistQueryParamsOrBuilder() {
+      if (assistQueryParamsBuilder_ != null) {
+        return assistQueryParamsBuilder_.getMessageOrBuilder();
+      } else {
+        return assistQueryParams_ == null
+            ? com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.getDefaultInstance()
+            : assistQueryParams_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Parameters for a human assist query.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.AssistQueryParameters,
+            com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.Builder,
+            com.google.cloud.dialogflow.v2beta1.AssistQueryParametersOrBuilder>
+        getAssistQueryParamsFieldBuilder() {
+      if (assistQueryParamsBuilder_ == null) {
+        assistQueryParamsBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.AssistQueryParameters,
+                com.google.cloud.dialogflow.v2beta1.AssistQueryParameters.Builder,
+                com.google.cloud.dialogflow.v2beta1.AssistQueryParametersOrBuilder>(
+                getAssistQueryParams(), getParentForChildren(), isClean());
+        assistQueryParams_ = null;
+      }
+      return assistQueryParamsBuilder_;
+    }
+
+    private com.google.protobuf.Struct cxParameters_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Struct,
+            com.google.protobuf.Struct.Builder,
+            com.google.protobuf.StructOrBuilder>
+        cxParametersBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     *
+     * @return Whether the cxParameters field is set.
+     */
+    public boolean hasCxParameters() {
+      return cxParametersBuilder_ != null || cxParameters_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     *
+     * @return The cxParameters.
+     */
+    public com.google.protobuf.Struct getCxParameters() {
+      if (cxParametersBuilder_ == null) {
+        return cxParameters_ == null
+            ? com.google.protobuf.Struct.getDefaultInstance()
+            : cxParameters_;
+      } else {
+        return cxParametersBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     */
+    public Builder setCxParameters(com.google.protobuf.Struct value) {
+      if (cxParametersBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        cxParameters_ = value;
+        onChanged();
+      } else {
+        cxParametersBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     */
+    public Builder setCxParameters(com.google.protobuf.Struct.Builder builderForValue) {
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = builderForValue.build();
+        onChanged();
+      } else {
+        cxParametersBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     */
+    public Builder mergeCxParameters(com.google.protobuf.Struct value) {
+      if (cxParametersBuilder_ == null) {
+        if (cxParameters_ != null) {
+          cxParameters_ =
+              com.google.protobuf.Struct.newBuilder(cxParameters_).mergeFrom(value).buildPartial();
+        } else {
+          cxParameters_ = value;
+        }
+        onChanged();
+      } else {
+        cxParametersBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     */
+    public Builder clearCxParameters() {
+      if (cxParametersBuilder_ == null) {
+        cxParameters_ = null;
+        onChanged();
+      } else {
+        cxParameters_ = null;
+        cxParametersBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     */
+    public com.google.protobuf.Struct.Builder getCxParametersBuilder() {
+
+      onChanged();
+      return getCxParametersFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     */
+    public com.google.protobuf.StructOrBuilder getCxParametersOrBuilder() {
+      if (cxParametersBuilder_ != null) {
+        return cxParametersBuilder_.getMessageOrBuilder();
+      } else {
+        return cxParameters_ == null
+            ? com.google.protobuf.Struct.getDefaultInstance()
+            : cxParameters_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Additional parameters to be put into Dialogflow CX session parameters. To
+     * remove a parameter from the session, clients should explicitly set the
+     * parameter value to null.
+     * Note: this field should only be used if you are connecting to a Dialogflow
+     * CX agent.
+     * </pre>
+     *
+     * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.protobuf.Struct,
+            com.google.protobuf.Struct.Builder,
+            com.google.protobuf.StructOrBuilder>
+        getCxParametersFieldBuilder() {
+      if (cxParametersBuilder_ == null) {
+        cxParametersBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.protobuf.Struct,
+                com.google.protobuf.Struct.Builder,
+                com.google.protobuf.StructOrBuilder>(
+                getCxParameters(), getParentForChildren(), isClean());
+        cxParameters_ = null;
+      }
+      return cxParametersBuilder_;
+    }
+
+    private boolean enablePartialAutomatedAgentReply_;
+    /**
+     *
+     *
+     * <pre>
+     * Enable partial virtual agent responses. If this flag is not enabled,
+     * response stream still contains only one final response even if some
+     * `Fulfillment`s in Dialogflow virtual agent have been configured to return
+     * partial responses.
+     * </pre>
+     *
+     * <code>bool enable_partial_automated_agent_reply = 12;</code>
+     *
+     * @return The enablePartialAutomatedAgentReply.
+     */
+    @java.lang.Override
+    public boolean getEnablePartialAutomatedAgentReply() {
+      return enablePartialAutomatedAgentReply_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Enable partial virtual agent responses. If this flag is not enabled,
+     * response stream still contains only one final response even if some
+     * `Fulfillment`s in Dialogflow virtual agent have been configured to return
+     * partial responses.
+     * </pre>
+     *
+     * <code>bool enable_partial_automated_agent_reply = 12;</code>
+     *
+     * @param value The enablePartialAutomatedAgentReply to set.
+     * @return This builder for chaining.
+     */
+    public Builder setEnablePartialAutomatedAgentReply(boolean value) {
+
+      enablePartialAutomatedAgentReply_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Enable partial virtual agent responses. If this flag is not enabled,
+     * response stream still contains only one final response even if some
+     * `Fulfillment`s in Dialogflow virtual agent have been configured to return
+     * partial responses.
+     * </pre>
+     *
+     * <code>bool enable_partial_automated_agent_reply = 12;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearEnablePartialAutomatedAgentReply() {
+
+      enablePartialAutomatedAgentReply_ = false;
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest)
+  private static final com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+      DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest();
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+      getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<StreamingAnalyzeContentRequest> PARSER =
+      new com.google.protobuf.AbstractParser<StreamingAnalyzeContentRequest>() {
+        @java.lang.Override
+        public StreamingAnalyzeContentRequest parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new StreamingAnalyzeContentRequest(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<StreamingAnalyzeContentRequest> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<StreamingAnalyzeContentRequest> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest
+      getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentRequestOrBuilder.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentRequestOrBuilder.java
new file mode 100644
index 000000000..f8e5cb220
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentRequestOrBuilder.java
@@ -0,0 +1,428 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2beta1/participant.proto
+
+package com.google.cloud.dialogflow.v2beta1;
+
+public interface StreamingAnalyzeContentRequestOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the participant this text comes from.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The participant.
+   */
+  java.lang.String getParticipant();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the participant this text comes from.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/conversations/&lt;Conversation ID&gt;/participants/&lt;Participant ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string participant = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for participant.
+   */
+  com.google.protobuf.ByteString getParticipantBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * Instructs the speech recognizer how to process the speech audio.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+   *
+   * @return Whether the audioConfig field is set.
+   */
+  boolean hasAudioConfig();
+  /**
+   *
+   *
+   * <pre>
+   * Instructs the speech recognizer how to process the speech audio.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+   *
+   * @return The audioConfig.
+   */
+  com.google.cloud.dialogflow.v2beta1.InputAudioConfig getAudioConfig();
+  /**
+   *
+   *
+   * <pre>
+   * Instructs the speech recognizer how to process the speech audio.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputAudioConfig audio_config = 2;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.InputAudioConfigOrBuilder getAudioConfigOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * The natural language text to be processed.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+   *
+   * @return Whether the textConfig field is set.
+   */
+  boolean hasTextConfig();
+  /**
+   *
+   *
+   * <pre>
+   * The natural language text to be processed.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+   *
+   * @return The textConfig.
+   */
+  com.google.cloud.dialogflow.v2beta1.InputTextConfig getTextConfig();
+  /**
+   *
+   *
+   * <pre>
+   * The natural language text to be processed.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.InputTextConfig text_config = 3;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.InputTextConfigOrBuilder getTextConfigOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Speech synthesis configuration.
+   * The speech synthesis settings for a virtual agent that may be configured
+   * for the associated conversation profile are not used when calling
+   * StreamingAnalyzeContent. If this configuration is not supplied, speech
+   * synthesis is disabled.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+   *
+   * @return Whether the replyAudioConfig field is set.
+   */
+  boolean hasReplyAudioConfig();
+  /**
+   *
+   *
+   * <pre>
+   * Speech synthesis configuration.
+   * The speech synthesis settings for a virtual agent that may be configured
+   * for the associated conversation profile are not used when calling
+   * StreamingAnalyzeContent. If this configuration is not supplied, speech
+   * synthesis is disabled.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+   *
+   * @return The replyAudioConfig.
+   */
+  com.google.cloud.dialogflow.v2beta1.OutputAudioConfig getReplyAudioConfig();
+  /**
+   *
+   *
+   * <pre>
+   * Speech synthesis configuration.
+   * The speech synthesis settings for a virtual agent that may be configured
+   * for the associated conversation profile are not used when calling
+   * StreamingAnalyzeContent. If this configuration is not supplied, speech
+   * synthesis is disabled.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudioConfig reply_audio_config = 4;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.OutputAudioConfigOrBuilder getReplyAudioConfigOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * The input audio content to be recognized. Must be sent if `audio_config`
+   * is set in the first message. The complete audio over all streaming
+   * messages must not exceed 1 minute.
+   * </pre>
+   *
+   * <code>bytes input_audio = 5;</code>
+   *
+   * @return Whether the inputAudio field is set.
+   */
+  boolean hasInputAudio();
+  /**
+   *
+   *
+   * <pre>
+   * The input audio content to be recognized. Must be sent if `audio_config`
+   * is set in the first message. The complete audio over all streaming
+   * messages must not exceed 1 minute.
+   * </pre>
+   *
+   * <code>bytes input_audio = 5;</code>
+   *
+   * @return The inputAudio.
+   */
+  com.google.protobuf.ByteString getInputAudio();
+
+  /**
+   *
+   *
+   * <pre>
+   * The UTF-8 encoded natural language text to be processed. Must be sent if
+   * `text_config` is set in the first message. Text length must not exceed
+   * 256 bytes. The `input_text` field can be only sent once.
+   * </pre>
+   *
+   * <code>string input_text = 6;</code>
+   *
+   * @return Whether the inputText field is set.
+   */
+  boolean hasInputText();
+  /**
+   *
+   *
+   * <pre>
+   * The UTF-8 encoded natural language text to be processed. Must be sent if
+   * `text_config` is set in the first message. Text length must not exceed
+   * 256 bytes. The `input_text` field can be only sent once.
+   * </pre>
+   *
+   * <code>string input_text = 6;</code>
+   *
+   * @return The inputText.
+   */
+  java.lang.String getInputText();
+  /**
+   *
+   *
+   * <pre>
+   * The UTF-8 encoded natural language text to be processed. Must be sent if
+   * `text_config` is set in the first message. Text length must not exceed
+   * 256 bytes. The `input_text` field can be only sent once.
+   * </pre>
+   *
+   * <code>string input_text = 6;</code>
+   *
+   * @return The bytes for inputText.
+   */
+  com.google.protobuf.ByteString getInputTextBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * The DTMF digits used to invoke intent and fill in parameter value.
+   * This input is ignored if the previous response indicated that DTMF input
+   * is not accepted.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+   *
+   * @return Whether the inputDtmf field is set.
+   */
+  boolean hasInputDtmf();
+  /**
+   *
+   *
+   * <pre>
+   * The DTMF digits used to invoke intent and fill in parameter value.
+   * This input is ignored if the previous response indicated that DTMF input
+   * is not accepted.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+   *
+   * @return The inputDtmf.
+   */
+  com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents getInputDtmf();
+  /**
+   *
+   *
+   * <pre>
+   * The DTMF digits used to invoke intent and fill in parameter value.
+   * This input is ignored if the previous response indicated that DTMF input
+   * is not accepted.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.TelephonyDtmfEvents input_dtmf = 9;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.TelephonyDtmfEventsOrBuilder getInputDtmfOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a Dialogflow virtual-agent query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+   *
+   * @return Whether the queryParams field is set.
+   */
+  boolean hasQueryParams();
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a Dialogflow virtual-agent query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+   *
+   * @return The queryParams.
+   */
+  com.google.cloud.dialogflow.v2beta1.QueryParameters getQueryParams();
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a Dialogflow virtual-agent query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.QueryParameters query_params = 7;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.QueryParametersOrBuilder getQueryParamsOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a human assist query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+   *
+   * @return Whether the assistQueryParams field is set.
+   */
+  boolean hasAssistQueryParams();
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a human assist query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+   *
+   * @return The assistQueryParams.
+   */
+  com.google.cloud.dialogflow.v2beta1.AssistQueryParameters getAssistQueryParams();
+  /**
+   *
+   *
+   * <pre>
+   * Parameters for a human assist query.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AssistQueryParameters assist_query_params = 8;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.AssistQueryParametersOrBuilder
+      getAssistQueryParamsOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+   *
+   * @return Whether the cxParameters field is set.
+   */
+  boolean hasCxParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+   *
+   * @return The cxParameters.
+   */
+  com.google.protobuf.Struct getCxParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Additional parameters to be put into Dialogflow CX session parameters. To
+   * remove a parameter from the session, clients should explicitly set the
+   * parameter value to null.
+   * Note: this field should only be used if you are connecting to a Dialogflow
+   * CX agent.
+   * </pre>
+   *
+   * <code>.google.protobuf.Struct cx_parameters = 13;</code>
+   */
+  com.google.protobuf.StructOrBuilder getCxParametersOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Enable partial virtual agent responses. If this flag is not enabled,
+   * response stream still contains only one final response even if some
+   * `Fulfillment`s in Dialogflow virtual agent have been configured to return
+   * partial responses.
+   * </pre>
+   *
+   * <code>bool enable_partial_automated_agent_reply = 12;</code>
+   *
+   * @return The enablePartialAutomatedAgentReply.
+   */
+  boolean getEnablePartialAutomatedAgentReply();
+
+  public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.ConfigCase
+      getConfigCase();
+
+  public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.InputCase
+      getInputCase();
+}
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentResponse.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentResponse.java
new file mode 100644
index 000000000..7aabd63ba
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentResponse.java
@@ -0,0 +1,3460 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2beta1/participant.proto
+
+package com.google.cloud.dialogflow.v2beta1;
+
+/**
+ *
+ *
+ * <pre>
+ * The top-level message returned from the `StreamingAnalyzeContent` method.
+ * Multiple response messages can be returned in order:
+ * 1.  If the input was set to streaming audio, the first one or more messages
+ *     contain `recognition_result`. Each `recognition_result` represents a more
+ *     complete transcript of what the user said. The last `recognition_result`
+ *     has `is_final` set to `true`.
+ * 2.  In virtual agent stage: if `enable_partial_automated_agent_reply` is
+ *     true, the following N (currently 1 &lt;= N &lt;= 4) messages
+ *     contain `automated_agent_reply` and optionally `reply_audio`
+ *     returned by the virtual agent. The first (N-1)
+ *     `automated_agent_reply`s will have `automated_agent_reply_type` set to
+ *     `PARTIAL`. The last `automated_agent_reply` has
+ *     `automated_agent_reply_type` set to `FINAL`.
+ *     If `enable_partial_automated_agent_reply` is not enabled, response stream
+ *     only contains the final reply.
+ *     In human assist stage: the following N (N &gt;= 1) messages contain
+ *     `human_agent_suggestion_results`, `end_user_suggestion_results` or
+ *     `message`.
+ * </pre>
+ *
+ * Protobuf type {@code google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse}
+ */
+public final class StreamingAnalyzeContentResponse extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse)
+    StreamingAnalyzeContentResponseOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use StreamingAnalyzeContentResponse.newBuilder() to construct.
+  private StreamingAnalyzeContentResponse(
+      com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private StreamingAnalyzeContentResponse() {
+    replyText_ = "";
+    humanAgentSuggestionResults_ = java.util.Collections.emptyList();
+    endUserSuggestionResults_ = java.util.Collections.emptyList();
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new StreamingAnalyzeContentResponse();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private StreamingAnalyzeContentResponse(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    int mutable_bitField0_ = 0;
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.Builder subBuilder =
+                  null;
+              if (recognitionResult_ != null) {
+                subBuilder = recognitionResult_.toBuilder();
+              }
+              recognitionResult_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(recognitionResult_);
+                recognitionResult_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 18:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              replyText_ = s;
+              break;
+            }
+          case 26:
+            {
+              com.google.cloud.dialogflow.v2beta1.OutputAudio.Builder subBuilder = null;
+              if (replyAudio_ != null) {
+                subBuilder = replyAudio_.toBuilder();
+              }
+              replyAudio_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.OutputAudio.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(replyAudio_);
+                replyAudio_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 34:
+            {
+              com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.Builder subBuilder = null;
+              if (automatedAgentReply_ != null) {
+                subBuilder = automatedAgentReply_.toBuilder();
+              }
+              automatedAgentReply_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(automatedAgentReply_);
+                automatedAgentReply_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 50:
+            {
+              com.google.cloud.dialogflow.v2beta1.Message.Builder subBuilder = null;
+              if (message_ != null) {
+                subBuilder = message_.toBuilder();
+              }
+              message_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.Message.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(message_);
+                message_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          case 58:
+            {
+              if (!((mutable_bitField0_ & 0x00000001) != 0)) {
+                humanAgentSuggestionResults_ =
+                    new java.util.ArrayList<com.google.cloud.dialogflow.v2beta1.SuggestionResult>();
+                mutable_bitField0_ |= 0x00000001;
+              }
+              humanAgentSuggestionResults_.add(
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.SuggestionResult.parser(),
+                      extensionRegistry));
+              break;
+            }
+          case 66:
+            {
+              if (!((mutable_bitField0_ & 0x00000002) != 0)) {
+                endUserSuggestionResults_ =
+                    new java.util.ArrayList<com.google.cloud.dialogflow.v2beta1.SuggestionResult>();
+                mutable_bitField0_ |= 0x00000002;
+              }
+              endUserSuggestionResults_.add(
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.SuggestionResult.parser(),
+                      extensionRegistry));
+              break;
+            }
+          case 82:
+            {
+              com.google.cloud.dialogflow.v2beta1.DtmfParameters.Builder subBuilder = null;
+              if (dtmfParameters_ != null) {
+                subBuilder = dtmfParameters_.toBuilder();
+              }
+              dtmfParameters_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2beta1.DtmfParameters.parser(),
+                      extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(dtmfParameters_);
+                dtmfParameters_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (com.google.protobuf.UninitializedMessageException e) {
+      throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      if (((mutable_bitField0_ & 0x00000001) != 0)) {
+        humanAgentSuggestionResults_ =
+            java.util.Collections.unmodifiableList(humanAgentSuggestionResults_);
+      }
+      if (((mutable_bitField0_ & 0x00000002) != 0)) {
+        endUserSuggestionResults_ =
+            java.util.Collections.unmodifiableList(endUserSuggestionResults_);
+      }
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+        .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+        .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.class,
+            com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.Builder.class);
+  }
+
+  public static final int RECOGNITION_RESULT_FIELD_NUMBER = 1;
+  private com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognitionResult_;
+  /**
+   *
+   *
+   * <pre>
+   * The result of speech recognition.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+   * </code>
+   *
+   * @return Whether the recognitionResult field is set.
+   */
+  @java.lang.Override
+  public boolean hasRecognitionResult() {
+    return recognitionResult_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The result of speech recognition.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+   * </code>
+   *
+   * @return The recognitionResult.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult getRecognitionResult() {
+    return recognitionResult_ == null
+        ? com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.getDefaultInstance()
+        : recognitionResult_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The result of speech recognition.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResultOrBuilder
+      getRecognitionResultOrBuilder() {
+    return getRecognitionResult();
+  }
+
+  public static final int REPLY_TEXT_FIELD_NUMBER = 2;
+  private volatile java.lang.Object replyText_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The output text content.
+   * This field is set if an automated agent responded with a text for the user.
+   * </pre>
+   *
+   * <code>string reply_text = 2;</code>
+   *
+   * @return The replyText.
+   */
+  @java.lang.Override
+  public java.lang.String getReplyText() {
+    java.lang.Object ref = replyText_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      replyText_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The output text content.
+   * This field is set if an automated agent responded with a text for the user.
+   * </pre>
+   *
+   * <code>string reply_text = 2;</code>
+   *
+   * @return The bytes for replyText.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getReplyTextBytes() {
+    java.lang.Object ref = replyText_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      replyText_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int REPLY_AUDIO_FIELD_NUMBER = 3;
+  private com.google.cloud.dialogflow.v2beta1.OutputAudio replyAudio_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The audio data bytes encoded as specified in the request.
+   * This field is set if:
+   *  - The `reply_audio_config` field is specified in the request.
+   *  - The automated agent, which this output comes from, responded with audio.
+   *    In such case, the `reply_audio.config` field contains settings used to
+   *    synthesize the speech.
+   * In some scenarios, multiple output audio fields may be present in the
+   * response structure. In these cases, only the top-most-level audio output
+   * has content.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+   *
+   * @return Whether the replyAudio field is set.
+   */
+  @java.lang.Override
+  public boolean hasReplyAudio() {
+    return replyAudio_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The audio data bytes encoded as specified in the request.
+   * This field is set if:
+   *  - The `reply_audio_config` field is specified in the request.
+   *  - The automated agent, which this output comes from, responded with audio.
+   *    In such case, the `reply_audio.config` field contains settings used to
+   *    synthesize the speech.
+   * In some scenarios, multiple output audio fields may be present in the
+   * response structure. In these cases, only the top-most-level audio output
+   * has content.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+   *
+   * @return The replyAudio.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.OutputAudio getReplyAudio() {
+    return replyAudio_ == null
+        ? com.google.cloud.dialogflow.v2beta1.OutputAudio.getDefaultInstance()
+        : replyAudio_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The audio data bytes encoded as specified in the request.
+   * This field is set if:
+   *  - The `reply_audio_config` field is specified in the request.
+   *  - The automated agent, which this output comes from, responded with audio.
+   *    In such case, the `reply_audio.config` field contains settings used to
+   *    synthesize the speech.
+   * In some scenarios, multiple output audio fields may be present in the
+   * response structure. In these cases, only the top-most-level audio output
+   * has content.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.OutputAudioOrBuilder getReplyAudioOrBuilder() {
+    return getReplyAudio();
+  }
+
+  public static final int AUTOMATED_AGENT_REPLY_FIELD_NUMBER = 4;
+  private com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automatedAgentReply_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Only set if a Dialogflow automated agent has responded.
+   * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+   * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+   * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+   *
+   * @return Whether the automatedAgentReply field is set.
+   */
+  @java.lang.Override
+  public boolean hasAutomatedAgentReply() {
+    return automatedAgentReply_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Only set if a Dialogflow automated agent has responded.
+   * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+   * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+   * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+   *
+   * @return The automatedAgentReply.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply getAutomatedAgentReply() {
+    return automatedAgentReply_ == null
+        ? com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.getDefaultInstance()
+        : automatedAgentReply_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Only set if a Dialogflow automated agent has responded.
+   * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+   * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+   * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.AutomatedAgentReplyOrBuilder
+      getAutomatedAgentReplyOrBuilder() {
+    return getAutomatedAgentReply();
+  }
+
+  public static final int MESSAGE_FIELD_NUMBER = 6;
+  private com.google.cloud.dialogflow.v2beta1.Message message_;
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Message analyzed by CCAI.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+   *
+   * @return Whether the message field is set.
+   */
+  @java.lang.Override
+  public boolean hasMessage() {
+    return message_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Message analyzed by CCAI.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+   *
+   * @return The message.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.Message getMessage() {
+    return message_ == null
+        ? com.google.cloud.dialogflow.v2beta1.Message.getDefaultInstance()
+        : message_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Message analyzed by CCAI.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.MessageOrBuilder getMessageOrBuilder() {
+    return getMessage();
+  }
+
+  public static final int HUMAN_AGENT_SUGGESTION_RESULTS_FIELD_NUMBER = 7;
+  private java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+      humanAgentSuggestionResults_;
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  @java.lang.Override
+  public java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+      getHumanAgentSuggestionResultsList() {
+    return humanAgentSuggestionResults_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  @java.lang.Override
+  public java.util.List<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+      getHumanAgentSuggestionResultsOrBuilderList() {
+    return humanAgentSuggestionResults_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  @java.lang.Override
+  public int getHumanAgentSuggestionResultsCount() {
+    return humanAgentSuggestionResults_.size();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.SuggestionResult getHumanAgentSuggestionResults(
+      int index) {
+    return humanAgentSuggestionResults_.get(index);
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder
+      getHumanAgentSuggestionResultsOrBuilder(int index) {
+    return humanAgentSuggestionResults_.get(index);
+  }
+
+  public static final int END_USER_SUGGESTION_RESULTS_FIELD_NUMBER = 8;
+  private java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+      endUserSuggestionResults_;
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  @java.lang.Override
+  public java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+      getEndUserSuggestionResultsList() {
+    return endUserSuggestionResults_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  @java.lang.Override
+  public java.util.List<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+      getEndUserSuggestionResultsOrBuilderList() {
+    return endUserSuggestionResults_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  @java.lang.Override
+  public int getEndUserSuggestionResultsCount() {
+    return endUserSuggestionResults_.size();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.SuggestionResult getEndUserSuggestionResults(
+      int index) {
+    return endUserSuggestionResults_.get(index);
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder
+      getEndUserSuggestionResultsOrBuilder(int index) {
+    return endUserSuggestionResults_.get(index);
+  }
+
+  public static final int DTMF_PARAMETERS_FIELD_NUMBER = 10;
+  private com.google.cloud.dialogflow.v2beta1.DtmfParameters dtmfParameters_;
+  /**
+   *
+   *
+   * <pre>
+   * Indicates the parameters of DTMF.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+   *
+   * @return Whether the dtmfParameters field is set.
+   */
+  @java.lang.Override
+  public boolean hasDtmfParameters() {
+    return dtmfParameters_ != null;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Indicates the parameters of DTMF.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+   *
+   * @return The dtmfParameters.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.DtmfParameters getDtmfParameters() {
+    return dtmfParameters_ == null
+        ? com.google.cloud.dialogflow.v2beta1.DtmfParameters.getDefaultInstance()
+        : dtmfParameters_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Indicates the parameters of DTMF.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.DtmfParametersOrBuilder getDtmfParametersOrBuilder() {
+    return getDtmfParameters();
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (recognitionResult_ != null) {
+      output.writeMessage(1, getRecognitionResult());
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(replyText_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, replyText_);
+    }
+    if (replyAudio_ != null) {
+      output.writeMessage(3, getReplyAudio());
+    }
+    if (automatedAgentReply_ != null) {
+      output.writeMessage(4, getAutomatedAgentReply());
+    }
+    if (message_ != null) {
+      output.writeMessage(6, getMessage());
+    }
+    for (int i = 0; i < humanAgentSuggestionResults_.size(); i++) {
+      output.writeMessage(7, humanAgentSuggestionResults_.get(i));
+    }
+    for (int i = 0; i < endUserSuggestionResults_.size(); i++) {
+      output.writeMessage(8, endUserSuggestionResults_.get(i));
+    }
+    if (dtmfParameters_ != null) {
+      output.writeMessage(10, getDtmfParameters());
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (recognitionResult_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(1, getRecognitionResult());
+    }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(replyText_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, replyText_);
+    }
+    if (replyAudio_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(3, getReplyAudio());
+    }
+    if (automatedAgentReply_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(4, getAutomatedAgentReply());
+    }
+    if (message_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(6, getMessage());
+    }
+    for (int i = 0; i < humanAgentSuggestionResults_.size(); i++) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              7, humanAgentSuggestionResults_.get(i));
+    }
+    for (int i = 0; i < endUserSuggestionResults_.size(); i++) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              8, endUserSuggestionResults_.get(i));
+    }
+    if (dtmfParameters_ != null) {
+      size += com.google.protobuf.CodedOutputStream.computeMessageSize(10, getDtmfParameters());
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse)) {
+      return super.equals(obj);
+    }
+    com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse other =
+        (com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse) obj;
+
+    if (hasRecognitionResult() != other.hasRecognitionResult()) return false;
+    if (hasRecognitionResult()) {
+      if (!getRecognitionResult().equals(other.getRecognitionResult())) return false;
+    }
+    if (!getReplyText().equals(other.getReplyText())) return false;
+    if (hasReplyAudio() != other.hasReplyAudio()) return false;
+    if (hasReplyAudio()) {
+      if (!getReplyAudio().equals(other.getReplyAudio())) return false;
+    }
+    if (hasAutomatedAgentReply() != other.hasAutomatedAgentReply()) return false;
+    if (hasAutomatedAgentReply()) {
+      if (!getAutomatedAgentReply().equals(other.getAutomatedAgentReply())) return false;
+    }
+    if (hasMessage() != other.hasMessage()) return false;
+    if (hasMessage()) {
+      if (!getMessage().equals(other.getMessage())) return false;
+    }
+    if (!getHumanAgentSuggestionResultsList().equals(other.getHumanAgentSuggestionResultsList()))
+      return false;
+    if (!getEndUserSuggestionResultsList().equals(other.getEndUserSuggestionResultsList()))
+      return false;
+    if (hasDtmfParameters() != other.hasDtmfParameters()) return false;
+    if (hasDtmfParameters()) {
+      if (!getDtmfParameters().equals(other.getDtmfParameters())) return false;
+    }
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    if (hasRecognitionResult()) {
+      hash = (37 * hash) + RECOGNITION_RESULT_FIELD_NUMBER;
+      hash = (53 * hash) + getRecognitionResult().hashCode();
+    }
+    hash = (37 * hash) + REPLY_TEXT_FIELD_NUMBER;
+    hash = (53 * hash) + getReplyText().hashCode();
+    if (hasReplyAudio()) {
+      hash = (37 * hash) + REPLY_AUDIO_FIELD_NUMBER;
+      hash = (53 * hash) + getReplyAudio().hashCode();
+    }
+    if (hasAutomatedAgentReply()) {
+      hash = (37 * hash) + AUTOMATED_AGENT_REPLY_FIELD_NUMBER;
+      hash = (53 * hash) + getAutomatedAgentReply().hashCode();
+    }
+    if (hasMessage()) {
+      hash = (37 * hash) + MESSAGE_FIELD_NUMBER;
+      hash = (53 * hash) + getMessage().hashCode();
+    }
+    if (getHumanAgentSuggestionResultsCount() > 0) {
+      hash = (37 * hash) + HUMAN_AGENT_SUGGESTION_RESULTS_FIELD_NUMBER;
+      hash = (53 * hash) + getHumanAgentSuggestionResultsList().hashCode();
+    }
+    if (getEndUserSuggestionResultsCount() > 0) {
+      hash = (37 * hash) + END_USER_SUGGESTION_RESULTS_FIELD_NUMBER;
+      hash = (53 * hash) + getEndUserSuggestionResultsList().hashCode();
+    }
+    if (hasDtmfParameters()) {
+      hash = (37 * hash) + DTMF_PARAMETERS_FIELD_NUMBER;
+      hash = (53 * hash) + getDtmfParameters().hashCode();
+    }
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      byte[] data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+      parseDelimitedFrom(java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+      parseDelimitedFrom(
+          java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The top-level message returned from the `StreamingAnalyzeContent` method.
+   * Multiple response messages can be returned in order:
+   * 1.  If the input was set to streaming audio, the first one or more messages
+   *     contain `recognition_result`. Each `recognition_result` represents a more
+   *     complete transcript of what the user said. The last `recognition_result`
+   *     has `is_final` set to `true`.
+   * 2.  In virtual agent stage: if `enable_partial_automated_agent_reply` is
+   *     true, the following N (currently 1 &lt;= N &lt;= 4) messages
+   *     contain `automated_agent_reply` and optionally `reply_audio`
+   *     returned by the virtual agent. The first (N-1)
+   *     `automated_agent_reply`s will have `automated_agent_reply_type` set to
+   *     `PARTIAL`. The last `automated_agent_reply` has
+   *     `automated_agent_reply_type` set to `FINAL`.
+   *     If `enable_partial_automated_agent_reply` is not enabled, response stream
+   *     only contains the final reply.
+   *     In human assist stage: the following N (N &gt;= 1) messages contain
+   *     `human_agent_suggestion_results`, `end_user_suggestion_results` or
+   *     `message`.
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse)
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponseOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.class,
+              com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.Builder.class);
+    }
+
+    // Construct using
+    // com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
+        getHumanAgentSuggestionResultsFieldBuilder();
+        getEndUserSuggestionResultsFieldBuilder();
+      }
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      if (recognitionResultBuilder_ == null) {
+        recognitionResult_ = null;
+      } else {
+        recognitionResult_ = null;
+        recognitionResultBuilder_ = null;
+      }
+      replyText_ = "";
+
+      if (replyAudioBuilder_ == null) {
+        replyAudio_ = null;
+      } else {
+        replyAudio_ = null;
+        replyAudioBuilder_ = null;
+      }
+      if (automatedAgentReplyBuilder_ == null) {
+        automatedAgentReply_ = null;
+      } else {
+        automatedAgentReply_ = null;
+        automatedAgentReplyBuilder_ = null;
+      }
+      if (messageBuilder_ == null) {
+        message_ = null;
+      } else {
+        message_ = null;
+        messageBuilder_ = null;
+      }
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        humanAgentSuggestionResults_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000001);
+      } else {
+        humanAgentSuggestionResultsBuilder_.clear();
+      }
+      if (endUserSuggestionResultsBuilder_ == null) {
+        endUserSuggestionResults_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000002);
+      } else {
+        endUserSuggestionResultsBuilder_.clear();
+      }
+      if (dtmfParametersBuilder_ == null) {
+        dtmfParameters_ = null;
+      } else {
+        dtmfParameters_ = null;
+        dtmfParametersBuilder_ = null;
+      }
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.cloud.dialogflow.v2beta1.ParticipantProto
+          .internal_static_google_cloud_dialogflow_v2beta1_StreamingAnalyzeContentResponse_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+        getDefaultInstanceForType() {
+      return com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+          .getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse build() {
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse buildPartial() {
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse result =
+          new com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse(this);
+      int from_bitField0_ = bitField0_;
+      if (recognitionResultBuilder_ == null) {
+        result.recognitionResult_ = recognitionResult_;
+      } else {
+        result.recognitionResult_ = recognitionResultBuilder_.build();
+      }
+      result.replyText_ = replyText_;
+      if (replyAudioBuilder_ == null) {
+        result.replyAudio_ = replyAudio_;
+      } else {
+        result.replyAudio_ = replyAudioBuilder_.build();
+      }
+      if (automatedAgentReplyBuilder_ == null) {
+        result.automatedAgentReply_ = automatedAgentReply_;
+      } else {
+        result.automatedAgentReply_ = automatedAgentReplyBuilder_.build();
+      }
+      if (messageBuilder_ == null) {
+        result.message_ = message_;
+      } else {
+        result.message_ = messageBuilder_.build();
+      }
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        if (((bitField0_ & 0x00000001) != 0)) {
+          humanAgentSuggestionResults_ =
+              java.util.Collections.unmodifiableList(humanAgentSuggestionResults_);
+          bitField0_ = (bitField0_ & ~0x00000001);
+        }
+        result.humanAgentSuggestionResults_ = humanAgentSuggestionResults_;
+      } else {
+        result.humanAgentSuggestionResults_ = humanAgentSuggestionResultsBuilder_.build();
+      }
+      if (endUserSuggestionResultsBuilder_ == null) {
+        if (((bitField0_ & 0x00000002) != 0)) {
+          endUserSuggestionResults_ =
+              java.util.Collections.unmodifiableList(endUserSuggestionResults_);
+          bitField0_ = (bitField0_ & ~0x00000002);
+        }
+        result.endUserSuggestionResults_ = endUserSuggestionResults_;
+      } else {
+        result.endUserSuggestionResults_ = endUserSuggestionResultsBuilder_.build();
+      }
+      if (dtmfParametersBuilder_ == null) {
+        result.dtmfParameters_ = dtmfParameters_;
+      } else {
+        result.dtmfParameters_ = dtmfParametersBuilder_.build();
+      }
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse) {
+        return mergeFrom(
+            (com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(
+        com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse other) {
+      if (other
+          == com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+              .getDefaultInstance()) return this;
+      if (other.hasRecognitionResult()) {
+        mergeRecognitionResult(other.getRecognitionResult());
+      }
+      if (!other.getReplyText().isEmpty()) {
+        replyText_ = other.replyText_;
+        onChanged();
+      }
+      if (other.hasReplyAudio()) {
+        mergeReplyAudio(other.getReplyAudio());
+      }
+      if (other.hasAutomatedAgentReply()) {
+        mergeAutomatedAgentReply(other.getAutomatedAgentReply());
+      }
+      if (other.hasMessage()) {
+        mergeMessage(other.getMessage());
+      }
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        if (!other.humanAgentSuggestionResults_.isEmpty()) {
+          if (humanAgentSuggestionResults_.isEmpty()) {
+            humanAgentSuggestionResults_ = other.humanAgentSuggestionResults_;
+            bitField0_ = (bitField0_ & ~0x00000001);
+          } else {
+            ensureHumanAgentSuggestionResultsIsMutable();
+            humanAgentSuggestionResults_.addAll(other.humanAgentSuggestionResults_);
+          }
+          onChanged();
+        }
+      } else {
+        if (!other.humanAgentSuggestionResults_.isEmpty()) {
+          if (humanAgentSuggestionResultsBuilder_.isEmpty()) {
+            humanAgentSuggestionResultsBuilder_.dispose();
+            humanAgentSuggestionResultsBuilder_ = null;
+            humanAgentSuggestionResults_ = other.humanAgentSuggestionResults_;
+            bitField0_ = (bitField0_ & ~0x00000001);
+            humanAgentSuggestionResultsBuilder_ =
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
+                    ? getHumanAgentSuggestionResultsFieldBuilder()
+                    : null;
+          } else {
+            humanAgentSuggestionResultsBuilder_.addAllMessages(other.humanAgentSuggestionResults_);
+          }
+        }
+      }
+      if (endUserSuggestionResultsBuilder_ == null) {
+        if (!other.endUserSuggestionResults_.isEmpty()) {
+          if (endUserSuggestionResults_.isEmpty()) {
+            endUserSuggestionResults_ = other.endUserSuggestionResults_;
+            bitField0_ = (bitField0_ & ~0x00000002);
+          } else {
+            ensureEndUserSuggestionResultsIsMutable();
+            endUserSuggestionResults_.addAll(other.endUserSuggestionResults_);
+          }
+          onChanged();
+        }
+      } else {
+        if (!other.endUserSuggestionResults_.isEmpty()) {
+          if (endUserSuggestionResultsBuilder_.isEmpty()) {
+            endUserSuggestionResultsBuilder_.dispose();
+            endUserSuggestionResultsBuilder_ = null;
+            endUserSuggestionResults_ = other.endUserSuggestionResults_;
+            bitField0_ = (bitField0_ & ~0x00000002);
+            endUserSuggestionResultsBuilder_ =
+                com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders
+                    ? getEndUserSuggestionResultsFieldBuilder()
+                    : null;
+          } else {
+            endUserSuggestionResultsBuilder_.addAllMessages(other.endUserSuggestionResults_);
+          }
+        }
+      }
+      if (other.hasDtmfParameters()) {
+        mergeDtmfParameters(other.getDtmfParameters());
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse)
+                e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private int bitField0_;
+
+    private com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognitionResult_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult,
+            com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.Builder,
+            com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResultOrBuilder>
+        recognitionResultBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     *
+     * @return Whether the recognitionResult field is set.
+     */
+    public boolean hasRecognitionResult() {
+      return recognitionResultBuilder_ != null || recognitionResult_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     *
+     * @return The recognitionResult.
+     */
+    public com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult getRecognitionResult() {
+      if (recognitionResultBuilder_ == null) {
+        return recognitionResult_ == null
+            ? com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.getDefaultInstance()
+            : recognitionResult_;
+      } else {
+        return recognitionResultBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     */
+    public Builder setRecognitionResult(
+        com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult value) {
+      if (recognitionResultBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        recognitionResult_ = value;
+        onChanged();
+      } else {
+        recognitionResultBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     */
+    public Builder setRecognitionResult(
+        com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.Builder builderForValue) {
+      if (recognitionResultBuilder_ == null) {
+        recognitionResult_ = builderForValue.build();
+        onChanged();
+      } else {
+        recognitionResultBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     */
+    public Builder mergeRecognitionResult(
+        com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult value) {
+      if (recognitionResultBuilder_ == null) {
+        if (recognitionResult_ != null) {
+          recognitionResult_ =
+              com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.newBuilder(
+                      recognitionResult_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          recognitionResult_ = value;
+        }
+        onChanged();
+      } else {
+        recognitionResultBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     */
+    public Builder clearRecognitionResult() {
+      if (recognitionResultBuilder_ == null) {
+        recognitionResult_ = null;
+        onChanged();
+      } else {
+        recognitionResult_ = null;
+        recognitionResultBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.Builder
+        getRecognitionResultBuilder() {
+
+      onChanged();
+      return getRecognitionResultFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResultOrBuilder
+        getRecognitionResultOrBuilder() {
+      if (recognitionResultBuilder_ != null) {
+        return recognitionResultBuilder_.getMessageOrBuilder();
+      } else {
+        return recognitionResult_ == null
+            ? com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.getDefaultInstance()
+            : recognitionResult_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The result of speech recognition.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+     * </code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult,
+            com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.Builder,
+            com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResultOrBuilder>
+        getRecognitionResultFieldBuilder() {
+      if (recognitionResultBuilder_ == null) {
+        recognitionResultBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult,
+                com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult.Builder,
+                com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResultOrBuilder>(
+                getRecognitionResult(), getParentForChildren(), isClean());
+        recognitionResult_ = null;
+      }
+      return recognitionResultBuilder_;
+    }
+
+    private java.lang.Object replyText_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The output text content.
+     * This field is set if an automated agent responded with a text for the user.
+     * </pre>
+     *
+     * <code>string reply_text = 2;</code>
+     *
+     * @return The replyText.
+     */
+    public java.lang.String getReplyText() {
+      java.lang.Object ref = replyText_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        replyText_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The output text content.
+     * This field is set if an automated agent responded with a text for the user.
+     * </pre>
+     *
+     * <code>string reply_text = 2;</code>
+     *
+     * @return The bytes for replyText.
+     */
+    public com.google.protobuf.ByteString getReplyTextBytes() {
+      java.lang.Object ref = replyText_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        replyText_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The output text content.
+     * This field is set if an automated agent responded with a text for the user.
+     * </pre>
+     *
+     * <code>string reply_text = 2;</code>
+     *
+     * @param value The replyText to set.
+     * @return This builder for chaining.
+     */
+    public Builder setReplyText(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      replyText_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The output text content.
+     * This field is set if an automated agent responded with a text for the user.
+     * </pre>
+     *
+     * <code>string reply_text = 2;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearReplyText() {
+
+      replyText_ = getDefaultInstance().getReplyText();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The output text content.
+     * This field is set if an automated agent responded with a text for the user.
+     * </pre>
+     *
+     * <code>string reply_text = 2;</code>
+     *
+     * @param value The bytes for replyText to set.
+     * @return This builder for chaining.
+     */
+    public Builder setReplyTextBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      replyText_ = value;
+      onChanged();
+      return this;
+    }
+
+    private com.google.cloud.dialogflow.v2beta1.OutputAudio replyAudio_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.OutputAudio,
+            com.google.cloud.dialogflow.v2beta1.OutputAudio.Builder,
+            com.google.cloud.dialogflow.v2beta1.OutputAudioOrBuilder>
+        replyAudioBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     *
+     * @return Whether the replyAudio field is set.
+     */
+    public boolean hasReplyAudio() {
+      return replyAudioBuilder_ != null || replyAudio_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     *
+     * @return The replyAudio.
+     */
+    public com.google.cloud.dialogflow.v2beta1.OutputAudio getReplyAudio() {
+      if (replyAudioBuilder_ == null) {
+        return replyAudio_ == null
+            ? com.google.cloud.dialogflow.v2beta1.OutputAudio.getDefaultInstance()
+            : replyAudio_;
+      } else {
+        return replyAudioBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     */
+    public Builder setReplyAudio(com.google.cloud.dialogflow.v2beta1.OutputAudio value) {
+      if (replyAudioBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        replyAudio_ = value;
+        onChanged();
+      } else {
+        replyAudioBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     */
+    public Builder setReplyAudio(
+        com.google.cloud.dialogflow.v2beta1.OutputAudio.Builder builderForValue) {
+      if (replyAudioBuilder_ == null) {
+        replyAudio_ = builderForValue.build();
+        onChanged();
+      } else {
+        replyAudioBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     */
+    public Builder mergeReplyAudio(com.google.cloud.dialogflow.v2beta1.OutputAudio value) {
+      if (replyAudioBuilder_ == null) {
+        if (replyAudio_ != null) {
+          replyAudio_ =
+              com.google.cloud.dialogflow.v2beta1.OutputAudio.newBuilder(replyAudio_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          replyAudio_ = value;
+        }
+        onChanged();
+      } else {
+        replyAudioBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     */
+    public Builder clearReplyAudio() {
+      if (replyAudioBuilder_ == null) {
+        replyAudio_ = null;
+        onChanged();
+      } else {
+        replyAudio_ = null;
+        replyAudioBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.OutputAudio.Builder getReplyAudioBuilder() {
+
+      onChanged();
+      return getReplyAudioFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.OutputAudioOrBuilder getReplyAudioOrBuilder() {
+      if (replyAudioBuilder_ != null) {
+        return replyAudioBuilder_.getMessageOrBuilder();
+      } else {
+        return replyAudio_ == null
+            ? com.google.cloud.dialogflow.v2beta1.OutputAudio.getDefaultInstance()
+            : replyAudio_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. The audio data bytes encoded as specified in the request.
+     * This field is set if:
+     *  - The `reply_audio_config` field is specified in the request.
+     *  - The automated agent, which this output comes from, responded with audio.
+     *    In such case, the `reply_audio.config` field contains settings used to
+     *    synthesize the speech.
+     * In some scenarios, multiple output audio fields may be present in the
+     * response structure. In these cases, only the top-most-level audio output
+     * has content.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.OutputAudio,
+            com.google.cloud.dialogflow.v2beta1.OutputAudio.Builder,
+            com.google.cloud.dialogflow.v2beta1.OutputAudioOrBuilder>
+        getReplyAudioFieldBuilder() {
+      if (replyAudioBuilder_ == null) {
+        replyAudioBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.OutputAudio,
+                com.google.cloud.dialogflow.v2beta1.OutputAudio.Builder,
+                com.google.cloud.dialogflow.v2beta1.OutputAudioOrBuilder>(
+                getReplyAudio(), getParentForChildren(), isClean());
+        replyAudio_ = null;
+      }
+      return replyAudioBuilder_;
+    }
+
+    private com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automatedAgentReply_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply,
+            com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.Builder,
+            com.google.cloud.dialogflow.v2beta1.AutomatedAgentReplyOrBuilder>
+        automatedAgentReplyBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     *
+     * @return Whether the automatedAgentReply field is set.
+     */
+    public boolean hasAutomatedAgentReply() {
+      return automatedAgentReplyBuilder_ != null || automatedAgentReply_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     *
+     * @return The automatedAgentReply.
+     */
+    public com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply getAutomatedAgentReply() {
+      if (automatedAgentReplyBuilder_ == null) {
+        return automatedAgentReply_ == null
+            ? com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.getDefaultInstance()
+            : automatedAgentReply_;
+      } else {
+        return automatedAgentReplyBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     */
+    public Builder setAutomatedAgentReply(
+        com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply value) {
+      if (automatedAgentReplyBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        automatedAgentReply_ = value;
+        onChanged();
+      } else {
+        automatedAgentReplyBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     */
+    public Builder setAutomatedAgentReply(
+        com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.Builder builderForValue) {
+      if (automatedAgentReplyBuilder_ == null) {
+        automatedAgentReply_ = builderForValue.build();
+        onChanged();
+      } else {
+        automatedAgentReplyBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     */
+    public Builder mergeAutomatedAgentReply(
+        com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply value) {
+      if (automatedAgentReplyBuilder_ == null) {
+        if (automatedAgentReply_ != null) {
+          automatedAgentReply_ =
+              com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.newBuilder(
+                      automatedAgentReply_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          automatedAgentReply_ = value;
+        }
+        onChanged();
+      } else {
+        automatedAgentReplyBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     */
+    public Builder clearAutomatedAgentReply() {
+      if (automatedAgentReplyBuilder_ == null) {
+        automatedAgentReply_ = null;
+        onChanged();
+      } else {
+        automatedAgentReply_ = null;
+        automatedAgentReplyBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.Builder
+        getAutomatedAgentReplyBuilder() {
+
+      onChanged();
+      return getAutomatedAgentReplyFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.AutomatedAgentReplyOrBuilder
+        getAutomatedAgentReplyOrBuilder() {
+      if (automatedAgentReplyBuilder_ != null) {
+        return automatedAgentReplyBuilder_.getMessageOrBuilder();
+      } else {
+        return automatedAgentReply_ == null
+            ? com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.getDefaultInstance()
+            : automatedAgentReply_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Only set if a Dialogflow automated agent has responded.
+     * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+     * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+     * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply,
+            com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.Builder,
+            com.google.cloud.dialogflow.v2beta1.AutomatedAgentReplyOrBuilder>
+        getAutomatedAgentReplyFieldBuilder() {
+      if (automatedAgentReplyBuilder_ == null) {
+        automatedAgentReplyBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply,
+                com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply.Builder,
+                com.google.cloud.dialogflow.v2beta1.AutomatedAgentReplyOrBuilder>(
+                getAutomatedAgentReply(), getParentForChildren(), isClean());
+        automatedAgentReply_ = null;
+      }
+      return automatedAgentReplyBuilder_;
+    }
+
+    private com.google.cloud.dialogflow.v2beta1.Message message_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.Message,
+            com.google.cloud.dialogflow.v2beta1.Message.Builder,
+            com.google.cloud.dialogflow.v2beta1.MessageOrBuilder>
+        messageBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     *
+     * @return Whether the message field is set.
+     */
+    public boolean hasMessage() {
+      return messageBuilder_ != null || message_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     *
+     * @return The message.
+     */
+    public com.google.cloud.dialogflow.v2beta1.Message getMessage() {
+      if (messageBuilder_ == null) {
+        return message_ == null
+            ? com.google.cloud.dialogflow.v2beta1.Message.getDefaultInstance()
+            : message_;
+      } else {
+        return messageBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     */
+    public Builder setMessage(com.google.cloud.dialogflow.v2beta1.Message value) {
+      if (messageBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        message_ = value;
+        onChanged();
+      } else {
+        messageBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     */
+    public Builder setMessage(com.google.cloud.dialogflow.v2beta1.Message.Builder builderForValue) {
+      if (messageBuilder_ == null) {
+        message_ = builderForValue.build();
+        onChanged();
+      } else {
+        messageBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     */
+    public Builder mergeMessage(com.google.cloud.dialogflow.v2beta1.Message value) {
+      if (messageBuilder_ == null) {
+        if (message_ != null) {
+          message_ =
+              com.google.cloud.dialogflow.v2beta1.Message.newBuilder(message_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          message_ = value;
+        }
+        onChanged();
+      } else {
+        messageBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     */
+    public Builder clearMessage() {
+      if (messageBuilder_ == null) {
+        message_ = null;
+        onChanged();
+      } else {
+        message_ = null;
+        messageBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.Message.Builder getMessageBuilder() {
+
+      onChanged();
+      return getMessageFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.MessageOrBuilder getMessageOrBuilder() {
+      if (messageBuilder_ != null) {
+        return messageBuilder_.getMessageOrBuilder();
+      } else {
+        return message_ == null
+            ? com.google.cloud.dialogflow.v2beta1.Message.getDefaultInstance()
+            : message_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Output only. Message analyzed by CCAI.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.Message,
+            com.google.cloud.dialogflow.v2beta1.Message.Builder,
+            com.google.cloud.dialogflow.v2beta1.MessageOrBuilder>
+        getMessageFieldBuilder() {
+      if (messageBuilder_ == null) {
+        messageBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.Message,
+                com.google.cloud.dialogflow.v2beta1.Message.Builder,
+                com.google.cloud.dialogflow.v2beta1.MessageOrBuilder>(
+                getMessage(), getParentForChildren(), isClean());
+        message_ = null;
+      }
+      return messageBuilder_;
+    }
+
+    private java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+        humanAgentSuggestionResults_ = java.util.Collections.emptyList();
+
+    private void ensureHumanAgentSuggestionResultsIsMutable() {
+      if (!((bitField0_ & 0x00000001) != 0)) {
+        humanAgentSuggestionResults_ =
+            new java.util.ArrayList<com.google.cloud.dialogflow.v2beta1.SuggestionResult>(
+                humanAgentSuggestionResults_);
+        bitField0_ |= 0x00000001;
+      }
+    }
+
+    private com.google.protobuf.RepeatedFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+        humanAgentSuggestionResultsBuilder_;
+
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+        getHumanAgentSuggestionResultsList() {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        return java.util.Collections.unmodifiableList(humanAgentSuggestionResults_);
+      } else {
+        return humanAgentSuggestionResultsBuilder_.getMessageList();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public int getHumanAgentSuggestionResultsCount() {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        return humanAgentSuggestionResults_.size();
+      } else {
+        return humanAgentSuggestionResultsBuilder_.getCount();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult getHumanAgentSuggestionResults(
+        int index) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        return humanAgentSuggestionResults_.get(index);
+      } else {
+        return humanAgentSuggestionResultsBuilder_.getMessage(index);
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder setHumanAgentSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult value) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureHumanAgentSuggestionResultsIsMutable();
+        humanAgentSuggestionResults_.set(index, value);
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.setMessage(index, value);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder setHumanAgentSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder builderForValue) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        ensureHumanAgentSuggestionResultsIsMutable();
+        humanAgentSuggestionResults_.set(index, builderForValue.build());
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.setMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder addHumanAgentSuggestionResults(
+        com.google.cloud.dialogflow.v2beta1.SuggestionResult value) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureHumanAgentSuggestionResultsIsMutable();
+        humanAgentSuggestionResults_.add(value);
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.addMessage(value);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder addHumanAgentSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult value) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureHumanAgentSuggestionResultsIsMutable();
+        humanAgentSuggestionResults_.add(index, value);
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.addMessage(index, value);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder addHumanAgentSuggestionResults(
+        com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder builderForValue) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        ensureHumanAgentSuggestionResultsIsMutable();
+        humanAgentSuggestionResults_.add(builderForValue.build());
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.addMessage(builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder addHumanAgentSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder builderForValue) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        ensureHumanAgentSuggestionResultsIsMutable();
+        humanAgentSuggestionResults_.add(index, builderForValue.build());
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.addMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder addAllHumanAgentSuggestionResults(
+        java.lang.Iterable<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResult> values) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        ensureHumanAgentSuggestionResultsIsMutable();
+        com.google.protobuf.AbstractMessageLite.Builder.addAll(
+            values, humanAgentSuggestionResults_);
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.addAllMessages(values);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder clearHumanAgentSuggestionResults() {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        humanAgentSuggestionResults_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000001);
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public Builder removeHumanAgentSuggestionResults(int index) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        ensureHumanAgentSuggestionResultsIsMutable();
+        humanAgentSuggestionResults_.remove(index);
+        onChanged();
+      } else {
+        humanAgentSuggestionResultsBuilder_.remove(index);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder
+        getHumanAgentSuggestionResultsBuilder(int index) {
+      return getHumanAgentSuggestionResultsFieldBuilder().getBuilder(index);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder
+        getHumanAgentSuggestionResultsOrBuilder(int index) {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        return humanAgentSuggestionResults_.get(index);
+      } else {
+        return humanAgentSuggestionResultsBuilder_.getMessageOrBuilder(index);
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public java.util.List<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+        getHumanAgentSuggestionResultsOrBuilderList() {
+      if (humanAgentSuggestionResultsBuilder_ != null) {
+        return humanAgentSuggestionResultsBuilder_.getMessageOrBuilderList();
+      } else {
+        return java.util.Collections.unmodifiableList(humanAgentSuggestionResults_);
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder
+        addHumanAgentSuggestionResultsBuilder() {
+      return getHumanAgentSuggestionResultsFieldBuilder()
+          .addBuilder(com.google.cloud.dialogflow.v2beta1.SuggestionResult.getDefaultInstance());
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder
+        addHumanAgentSuggestionResultsBuilder(int index) {
+      return getHumanAgentSuggestionResultsFieldBuilder()
+          .addBuilder(
+              index, com.google.cloud.dialogflow.v2beta1.SuggestionResult.getDefaultInstance());
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for most recent human agent. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+     * </code>
+     */
+    public java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder>
+        getHumanAgentSuggestionResultsBuilderList() {
+      return getHumanAgentSuggestionResultsFieldBuilder().getBuilderList();
+    }
+
+    private com.google.protobuf.RepeatedFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+        getHumanAgentSuggestionResultsFieldBuilder() {
+      if (humanAgentSuggestionResultsBuilder_ == null) {
+        humanAgentSuggestionResultsBuilder_ =
+            new com.google.protobuf.RepeatedFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.SuggestionResult,
+                com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder,
+                com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>(
+                humanAgentSuggestionResults_,
+                ((bitField0_ & 0x00000001) != 0),
+                getParentForChildren(),
+                isClean());
+        humanAgentSuggestionResults_ = null;
+      }
+      return humanAgentSuggestionResultsBuilder_;
+    }
+
+    private java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+        endUserSuggestionResults_ = java.util.Collections.emptyList();
+
+    private void ensureEndUserSuggestionResultsIsMutable() {
+      if (!((bitField0_ & 0x00000002) != 0)) {
+        endUserSuggestionResults_ =
+            new java.util.ArrayList<com.google.cloud.dialogflow.v2beta1.SuggestionResult>(
+                endUserSuggestionResults_);
+        bitField0_ |= 0x00000002;
+      }
+    }
+
+    private com.google.protobuf.RepeatedFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+        endUserSuggestionResultsBuilder_;
+
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+        getEndUserSuggestionResultsList() {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        return java.util.Collections.unmodifiableList(endUserSuggestionResults_);
+      } else {
+        return endUserSuggestionResultsBuilder_.getMessageList();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public int getEndUserSuggestionResultsCount() {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        return endUserSuggestionResults_.size();
+      } else {
+        return endUserSuggestionResultsBuilder_.getCount();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult getEndUserSuggestionResults(
+        int index) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        return endUserSuggestionResults_.get(index);
+      } else {
+        return endUserSuggestionResultsBuilder_.getMessage(index);
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder setEndUserSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult value) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureEndUserSuggestionResultsIsMutable();
+        endUserSuggestionResults_.set(index, value);
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.setMessage(index, value);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder setEndUserSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder builderForValue) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        ensureEndUserSuggestionResultsIsMutable();
+        endUserSuggestionResults_.set(index, builderForValue.build());
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.setMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder addEndUserSuggestionResults(
+        com.google.cloud.dialogflow.v2beta1.SuggestionResult value) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureEndUserSuggestionResultsIsMutable();
+        endUserSuggestionResults_.add(value);
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.addMessage(value);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder addEndUserSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult value) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureEndUserSuggestionResultsIsMutable();
+        endUserSuggestionResults_.add(index, value);
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.addMessage(index, value);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder addEndUserSuggestionResults(
+        com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder builderForValue) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        ensureEndUserSuggestionResultsIsMutable();
+        endUserSuggestionResults_.add(builderForValue.build());
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.addMessage(builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder addEndUserSuggestionResults(
+        int index, com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder builderForValue) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        ensureEndUserSuggestionResultsIsMutable();
+        endUserSuggestionResults_.add(index, builderForValue.build());
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.addMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder addAllEndUserSuggestionResults(
+        java.lang.Iterable<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResult> values) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        ensureEndUserSuggestionResultsIsMutable();
+        com.google.protobuf.AbstractMessageLite.Builder.addAll(values, endUserSuggestionResults_);
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.addAllMessages(values);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder clearEndUserSuggestionResults() {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        endUserSuggestionResults_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000002);
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public Builder removeEndUserSuggestionResults(int index) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        ensureEndUserSuggestionResultsIsMutable();
+        endUserSuggestionResults_.remove(index);
+        onChanged();
+      } else {
+        endUserSuggestionResultsBuilder_.remove(index);
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder
+        getEndUserSuggestionResultsBuilder(int index) {
+      return getEndUserSuggestionResultsFieldBuilder().getBuilder(index);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder
+        getEndUserSuggestionResultsOrBuilder(int index) {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        return endUserSuggestionResults_.get(index);
+      } else {
+        return endUserSuggestionResultsBuilder_.getMessageOrBuilder(index);
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public java.util.List<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+        getEndUserSuggestionResultsOrBuilderList() {
+      if (endUserSuggestionResultsBuilder_ != null) {
+        return endUserSuggestionResultsBuilder_.getMessageOrBuilderList();
+      } else {
+        return java.util.Collections.unmodifiableList(endUserSuggestionResults_);
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder
+        addEndUserSuggestionResultsBuilder() {
+      return getEndUserSuggestionResultsFieldBuilder()
+          .addBuilder(com.google.cloud.dialogflow.v2beta1.SuggestionResult.getDefaultInstance());
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder
+        addEndUserSuggestionResultsBuilder(int index) {
+      return getEndUserSuggestionResultsFieldBuilder()
+          .addBuilder(
+              index, com.google.cloud.dialogflow.v2beta1.SuggestionResult.getDefaultInstance());
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The suggestions for end user. The order is the same as
+     * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+     * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+     * </pre>
+     *
+     * <code>
+     * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+     * </code>
+     */
+    public java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder>
+        getEndUserSuggestionResultsBuilderList() {
+      return getEndUserSuggestionResultsFieldBuilder().getBuilderList();
+    }
+
+    private com.google.protobuf.RepeatedFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder,
+            com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+        getEndUserSuggestionResultsFieldBuilder() {
+      if (endUserSuggestionResultsBuilder_ == null) {
+        endUserSuggestionResultsBuilder_ =
+            new com.google.protobuf.RepeatedFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.SuggestionResult,
+                com.google.cloud.dialogflow.v2beta1.SuggestionResult.Builder,
+                com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>(
+                endUserSuggestionResults_,
+                ((bitField0_ & 0x00000002) != 0),
+                getParentForChildren(),
+                isClean());
+        endUserSuggestionResults_ = null;
+      }
+      return endUserSuggestionResultsBuilder_;
+    }
+
+    private com.google.cloud.dialogflow.v2beta1.DtmfParameters dtmfParameters_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.DtmfParameters,
+            com.google.cloud.dialogflow.v2beta1.DtmfParameters.Builder,
+            com.google.cloud.dialogflow.v2beta1.DtmfParametersOrBuilder>
+        dtmfParametersBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     *
+     * @return Whether the dtmfParameters field is set.
+     */
+    public boolean hasDtmfParameters() {
+      return dtmfParametersBuilder_ != null || dtmfParameters_ != null;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     *
+     * @return The dtmfParameters.
+     */
+    public com.google.cloud.dialogflow.v2beta1.DtmfParameters getDtmfParameters() {
+      if (dtmfParametersBuilder_ == null) {
+        return dtmfParameters_ == null
+            ? com.google.cloud.dialogflow.v2beta1.DtmfParameters.getDefaultInstance()
+            : dtmfParameters_;
+      } else {
+        return dtmfParametersBuilder_.getMessage();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     */
+    public Builder setDtmfParameters(com.google.cloud.dialogflow.v2beta1.DtmfParameters value) {
+      if (dtmfParametersBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        dtmfParameters_ = value;
+        onChanged();
+      } else {
+        dtmfParametersBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     */
+    public Builder setDtmfParameters(
+        com.google.cloud.dialogflow.v2beta1.DtmfParameters.Builder builderForValue) {
+      if (dtmfParametersBuilder_ == null) {
+        dtmfParameters_ = builderForValue.build();
+        onChanged();
+      } else {
+        dtmfParametersBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     */
+    public Builder mergeDtmfParameters(com.google.cloud.dialogflow.v2beta1.DtmfParameters value) {
+      if (dtmfParametersBuilder_ == null) {
+        if (dtmfParameters_ != null) {
+          dtmfParameters_ =
+              com.google.cloud.dialogflow.v2beta1.DtmfParameters.newBuilder(dtmfParameters_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          dtmfParameters_ = value;
+        }
+        onChanged();
+      } else {
+        dtmfParametersBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     */
+    public Builder clearDtmfParameters() {
+      if (dtmfParametersBuilder_ == null) {
+        dtmfParameters_ = null;
+        onChanged();
+      } else {
+        dtmfParameters_ = null;
+        dtmfParametersBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.DtmfParameters.Builder getDtmfParametersBuilder() {
+
+      onChanged();
+      return getDtmfParametersFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     */
+    public com.google.cloud.dialogflow.v2beta1.DtmfParametersOrBuilder
+        getDtmfParametersOrBuilder() {
+      if (dtmfParametersBuilder_ != null) {
+        return dtmfParametersBuilder_.getMessageOrBuilder();
+      } else {
+        return dtmfParameters_ == null
+            ? com.google.cloud.dialogflow.v2beta1.DtmfParameters.getDefaultInstance()
+            : dtmfParameters_;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Indicates the parameters of DTMF.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2beta1.DtmfParameters,
+            com.google.cloud.dialogflow.v2beta1.DtmfParameters.Builder,
+            com.google.cloud.dialogflow.v2beta1.DtmfParametersOrBuilder>
+        getDtmfParametersFieldBuilder() {
+      if (dtmfParametersBuilder_ == null) {
+        dtmfParametersBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2beta1.DtmfParameters,
+                com.google.cloud.dialogflow.v2beta1.DtmfParameters.Builder,
+                com.google.cloud.dialogflow.v2beta1.DtmfParametersOrBuilder>(
+                getDtmfParameters(), getParentForChildren(), isClean());
+        dtmfParameters_ = null;
+      }
+      return dtmfParametersBuilder_;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse)
+  private static final com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+      DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse();
+  }
+
+  public static com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+      getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<StreamingAnalyzeContentResponse> PARSER =
+      new com.google.protobuf.AbstractParser<StreamingAnalyzeContentResponse>() {
+        @java.lang.Override
+        public StreamingAnalyzeContentResponse parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new StreamingAnalyzeContentResponse(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<StreamingAnalyzeContentResponse> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<StreamingAnalyzeContentResponse> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse
+      getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentResponseOrBuilder.java b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentResponseOrBuilder.java
new file mode 100644
index 000000000..9bf4eb51b
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/java/com/google/cloud/dialogflow/v2beta1/StreamingAnalyzeContentResponseOrBuilder.java
@@ -0,0 +1,413 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2beta1/participant.proto
+
+package com.google.cloud.dialogflow.v2beta1;
+
+public interface StreamingAnalyzeContentResponseOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * The result of speech recognition.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+   * </code>
+   *
+   * @return Whether the recognitionResult field is set.
+   */
+  boolean hasRecognitionResult();
+  /**
+   *
+   *
+   * <pre>
+   * The result of speech recognition.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+   * </code>
+   *
+   * @return The recognitionResult.
+   */
+  com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult getRecognitionResult();
+  /**
+   *
+   *
+   * <pre>
+   * The result of speech recognition.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.StreamingRecognitionResult recognition_result = 1;
+   * </code>
+   */
+  com.google.cloud.dialogflow.v2beta1.StreamingRecognitionResultOrBuilder
+      getRecognitionResultOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The output text content.
+   * This field is set if an automated agent responded with a text for the user.
+   * </pre>
+   *
+   * <code>string reply_text = 2;</code>
+   *
+   * @return The replyText.
+   */
+  java.lang.String getReplyText();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The output text content.
+   * This field is set if an automated agent responded with a text for the user.
+   * </pre>
+   *
+   * <code>string reply_text = 2;</code>
+   *
+   * @return The bytes for replyText.
+   */
+  com.google.protobuf.ByteString getReplyTextBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The audio data bytes encoded as specified in the request.
+   * This field is set if:
+   *  - The `reply_audio_config` field is specified in the request.
+   *  - The automated agent, which this output comes from, responded with audio.
+   *    In such case, the `reply_audio.config` field contains settings used to
+   *    synthesize the speech.
+   * In some scenarios, multiple output audio fields may be present in the
+   * response structure. In these cases, only the top-most-level audio output
+   * has content.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+   *
+   * @return Whether the replyAudio field is set.
+   */
+  boolean hasReplyAudio();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The audio data bytes encoded as specified in the request.
+   * This field is set if:
+   *  - The `reply_audio_config` field is specified in the request.
+   *  - The automated agent, which this output comes from, responded with audio.
+   *    In such case, the `reply_audio.config` field contains settings used to
+   *    synthesize the speech.
+   * In some scenarios, multiple output audio fields may be present in the
+   * response structure. In these cases, only the top-most-level audio output
+   * has content.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+   *
+   * @return The replyAudio.
+   */
+  com.google.cloud.dialogflow.v2beta1.OutputAudio getReplyAudio();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. The audio data bytes encoded as specified in the request.
+   * This field is set if:
+   *  - The `reply_audio_config` field is specified in the request.
+   *  - The automated agent, which this output comes from, responded with audio.
+   *    In such case, the `reply_audio.config` field contains settings used to
+   *    synthesize the speech.
+   * In some scenarios, multiple output audio fields may be present in the
+   * response structure. In these cases, only the top-most-level audio output
+   * has content.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.OutputAudio reply_audio = 3;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.OutputAudioOrBuilder getReplyAudioOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Only set if a Dialogflow automated agent has responded.
+   * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+   * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+   * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+   *
+   * @return Whether the automatedAgentReply field is set.
+   */
+  boolean hasAutomatedAgentReply();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Only set if a Dialogflow automated agent has responded.
+   * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+   * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+   * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+   *
+   * @return The automatedAgentReply.
+   */
+  com.google.cloud.dialogflow.v2beta1.AutomatedAgentReply getAutomatedAgentReply();
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Only set if a Dialogflow automated agent has responded.
+   * Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+   * and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+   * are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.AutomatedAgentReply automated_agent_reply = 4;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.AutomatedAgentReplyOrBuilder
+      getAutomatedAgentReplyOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Message analyzed by CCAI.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+   *
+   * @return Whether the message field is set.
+   */
+  boolean hasMessage();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Message analyzed by CCAI.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+   *
+   * @return The message.
+   */
+  com.google.cloud.dialogflow.v2beta1.Message getMessage();
+  /**
+   *
+   *
+   * <pre>
+   * Output only. Message analyzed by CCAI.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.Message message = 6;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.MessageOrBuilder getMessageOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+      getHumanAgentSuggestionResultsList();
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  com.google.cloud.dialogflow.v2beta1.SuggestionResult getHumanAgentSuggestionResults(int index);
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  int getHumanAgentSuggestionResultsCount();
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  java.util.List<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+      getHumanAgentSuggestionResultsOrBuilderList();
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for most recent human agent. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult human_agent_suggestion_results = 7;
+   * </code>
+   */
+  com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder
+      getHumanAgentSuggestionResultsOrBuilder(int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  java.util.List<com.google.cloud.dialogflow.v2beta1.SuggestionResult>
+      getEndUserSuggestionResultsList();
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  com.google.cloud.dialogflow.v2beta1.SuggestionResult getEndUserSuggestionResults(int index);
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  int getEndUserSuggestionResultsCount();
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  java.util.List<? extends com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder>
+      getEndUserSuggestionResultsOrBuilderList();
+  /**
+   *
+   *
+   * <pre>
+   * The suggestions for end user. The order is the same as
+   * [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+   * [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+   * </pre>
+   *
+   * <code>
+   * repeated .google.cloud.dialogflow.v2beta1.SuggestionResult end_user_suggestion_results = 8;
+   * </code>
+   */
+  com.google.cloud.dialogflow.v2beta1.SuggestionResultOrBuilder
+      getEndUserSuggestionResultsOrBuilder(int index);
+
+  /**
+   *
+   *
+   * <pre>
+   * Indicates the parameters of DTMF.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+   *
+   * @return Whether the dtmfParameters field is set.
+   */
+  boolean hasDtmfParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Indicates the parameters of DTMF.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+   *
+   * @return The dtmfParameters.
+   */
+  com.google.cloud.dialogflow.v2beta1.DtmfParameters getDtmfParameters();
+  /**
+   *
+   *
+   * <pre>
+   * Indicates the parameters of DTMF.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2beta1.DtmfParameters dtmf_parameters = 10;</code>
+   */
+  com.google.cloud.dialogflow.v2beta1.DtmfParametersOrBuilder getDtmfParametersOrBuilder();
+}
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/audio_config.proto b/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/audio_config.proto
index 62952f444..c72899df7 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/audio_config.proto
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/audio_config.proto
@@ -27,6 +27,10 @@ option java_multiple_files = true;
 option java_outer_classname = "AudioConfigProto";
 option java_package = "com.google.cloud.dialogflow.v2beta1";
 option objc_class_prefix = "DF";
+option (google.api.resource_definition) = {
+  type: "automl.googleapis.com/Model"
+  pattern: "projects/{project}/locations/{location}/models/{model}"
+};
 
 // Audio encoding of the audio content sent in the conversational query request.
 // Refer to the
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/fulfillment.proto b/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/fulfillment.proto
index ce72a54ec..8efe32af2 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/fulfillment.proto
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/fulfillment.proto
@@ -81,8 +81,10 @@ message Fulfillment {
 
   // Represents configuration for a generic web service.
   // Dialogflow supports two mechanisms for authentications:
+  //
   // - Basic authentication with username and password.
   // - Authentication with additional authentication headers.
+  //
   // More information could be found at:
   // https://cloud.google.com/dialogflow/docs/fulfillment-configure.
   message GenericWebService {
@@ -127,6 +129,7 @@ message Fulfillment {
 
   // Required. The unique identifier of the fulfillment.
   // Supported formats:
+  //
   // - `projects/<Project ID>/agent/fulfillment`
   // - `projects/<Project ID>/locations/<Location ID>/agent/fulfillment`
   //
@@ -155,6 +158,7 @@ message Fulfillment {
 message GetFulfillmentRequest {
   // Required. The name of the fulfillment.
   // Supported formats:
+  //
   // - `projects/<Project ID>/agent/fulfillment`
   // - `projects/<Project ID>/locations/<Location ID>/agent/fulfillment`
   string name = 1 [
diff --git a/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/participant.proto b/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/participant.proto
index 2552fd1bd..6dc9eec19 100644
--- a/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/participant.proto
+++ b/proto-google-cloud-dialogflow-v2beta1/src/main/proto/google/cloud/dialogflow/v2beta1/participant.proto
@@ -109,6 +109,24 @@ service Participants {
     option (google.api.method_signature) = "participant,event_input";
   }
 
+  // Adds a text (e.g., chat) or audio (e.g., phone recording) message from a
+  // participant into the conversation.
+  // Note: This method is only available through the gRPC API (not REST).
+  //
+  // The top-level message sent to the client by the server is
+  // `StreamingAnalyzeContentResponse`. Multiple response messages can be
+  // returned in order. The first one or more messages contain the
+  // `recognition_result` field. Each result represents a more complete
+  // transcript of what the user said. The next message contains the
+  // `reply_text` field, and potentially the `reply_audio` and/or the
+  // `automated_agent_reply` fields.
+  //
+  // Note: Always use agent versions for production traffic
+  // sent to virtual agents. See [Versions and
+  // environments](https://cloud.google.com/dialogflow/es/docs/agents-versions).
+  rpc StreamingAnalyzeContent(stream StreamingAnalyzeContentRequest) returns (stream StreamingAnalyzeContentResponse) {
+  }
+
   // Gets suggested articles for a participant based on specific historical
   // messages.
   //
@@ -543,6 +561,14 @@ message AnalyzeContentRequest {
   // Parameters for a human assist query.
   AssistQueryParameters assist_query_params = 14;
 
+  // Additional parameters to be put into Dialogflow CX session parameters. To
+  // remove a parameter from the session, clients should explicitly set the
+  // parameter value to null.
+  //
+  // Note: this field should only be used if you are connecting to a Dialogflow
+  // CX agent.
+  google.protobuf.Struct cx_parameters = 18;
+
   // Optional. The send time of the message from end user or human agent's
   // perspective. It is used for identifying the same message under one
   // participant.
@@ -624,6 +650,182 @@ message AnalyzeContentResponse {
   DtmfParameters dtmf_parameters = 9;
 }
 
+// Defines the language used in the input text.
+message InputTextConfig {
+  // Required. The language of this conversational query. See [Language
+  // Support](https://cloud.google.com/dialogflow/docs/reference/language)
+  // for a list of the currently supported language codes.
+  string language_code = 1;
+}
+
+// The top-level message sent by the client to the
+// [Participants.StreamingAnalyzeContent][google.cloud.dialogflow.v2beta1.Participants.StreamingAnalyzeContent] method.
+//
+// Multiple request messages should be sent in order:
+//
+// 1.  The first message must contain
+//     [participant][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.participant],
+//     [config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] and optionally
+//     [query_params][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.query_params]. If you want
+//     to receive an audio response, it should also contain
+//     [reply_audio_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.reply_audio_config].
+//     The message must not contain
+//     [input][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input].
+//
+// 2.  If [config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] in the first message
+//     was set to [audio_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.audio_config],
+//     all subsequent messages must contain
+//     [input_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_audio] to continue
+//     with Speech recognition.
+//     If you decide to rather analyze text input after you already started
+//     Speech recognition, please send a message with
+//     [StreamingAnalyzeContentRequest.input_text][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_text].
+//
+//     However, note that:
+//
+//     * Dialogflow will bill you for the audio so far.
+//     * Dialogflow discards all Speech recognition results in favor of the
+//       text input.
+//
+//  3. If [StreamingAnalyzeContentRequest.config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.config] in the first message was set
+//    to [StreamingAnalyzeContentRequest.text_config][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.text_config], then the second message
+//    must contain only [input_text][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentRequest.input_text].
+//    Moreover, you must not send more than two messages.
+//
+//  After you sent all input, you must half-close or abort the request stream.
+message StreamingAnalyzeContentRequest {
+  // Required. The name of the participant this text comes from.
+  // Format: `projects/<Project ID>/locations/<Location
+  // ID>/conversations/<Conversation ID>/participants/<Participant ID>`.
+  string participant = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "dialogflow.googleapis.com/Participant"
+    }
+  ];
+
+  // Required. The input config.
+  oneof config {
+    // Instructs the speech recognizer how to process the speech audio.
+    InputAudioConfig audio_config = 2;
+
+    // The natural language text to be processed.
+    InputTextConfig text_config = 3;
+  }
+
+  // Speech synthesis configuration.
+  // The speech synthesis settings for a virtual agent that may be configured
+  // for the associated conversation profile are not used when calling
+  // StreamingAnalyzeContent. If this configuration is not supplied, speech
+  // synthesis is disabled.
+  OutputAudioConfig reply_audio_config = 4;
+
+  // Required. The input.
+  oneof input {
+    // The input audio content to be recognized. Must be sent if `audio_config`
+    // is set in the first message. The complete audio over all streaming
+    // messages must not exceed 1 minute.
+    bytes input_audio = 5;
+
+    // The UTF-8 encoded natural language text to be processed. Must be sent if
+    // `text_config` is set in the first message. Text length must not exceed
+    // 256 bytes. The `input_text` field can be only sent once.
+    string input_text = 6;
+
+    // The DTMF digits used to invoke intent and fill in parameter value.
+    //
+    // This input is ignored if the previous response indicated that DTMF input
+    // is not accepted.
+    TelephonyDtmfEvents input_dtmf = 9;
+  }
+
+  // Parameters for a Dialogflow virtual-agent query.
+  QueryParameters query_params = 7;
+
+  // Parameters for a human assist query.
+  AssistQueryParameters assist_query_params = 8;
+
+  // Additional parameters to be put into Dialogflow CX session parameters. To
+  // remove a parameter from the session, clients should explicitly set the
+  // parameter value to null.
+  //
+  // Note: this field should only be used if you are connecting to a Dialogflow
+  // CX agent.
+  google.protobuf.Struct cx_parameters = 13;
+
+  // Enable partial virtual agent responses. If this flag is not enabled,
+  // response stream still contains only one final response even if some
+  // `Fulfillment`s in Dialogflow virtual agent have been configured to return
+  // partial responses.
+  bool enable_partial_automated_agent_reply = 12;
+}
+
+// The top-level message returned from the `StreamingAnalyzeContent` method.
+//
+// Multiple response messages can be returned in order:
+//
+// 1.  If the input was set to streaming audio, the first one or more messages
+//     contain `recognition_result`. Each `recognition_result` represents a more
+//     complete transcript of what the user said. The last `recognition_result`
+//     has `is_final` set to `true`.
+//
+// 2.  In virtual agent stage: if `enable_partial_automated_agent_reply` is
+//     true, the following N (currently 1 <= N <= 4) messages
+//     contain `automated_agent_reply` and optionally `reply_audio`
+//     returned by the virtual agent. The first (N-1)
+//     `automated_agent_reply`s will have `automated_agent_reply_type` set to
+//     `PARTIAL`. The last `automated_agent_reply` has
+//     `automated_agent_reply_type` set to `FINAL`.
+//     If `enable_partial_automated_agent_reply` is not enabled, response stream
+//     only contains the final reply.
+//
+//     In human assist stage: the following N (N >= 1) messages contain
+//     `human_agent_suggestion_results`, `end_user_suggestion_results` or
+//     `message`.
+message StreamingAnalyzeContentResponse {
+  // The result of speech recognition.
+  StreamingRecognitionResult recognition_result = 1;
+
+  // Optional. The output text content.
+  // This field is set if an automated agent responded with a text for the user.
+  string reply_text = 2;
+
+  // Optional. The audio data bytes encoded as specified in the request.
+  // This field is set if:
+  //
+  //  - The `reply_audio_config` field is specified in the request.
+  //  - The automated agent, which this output comes from, responded with audio.
+  //    In such case, the `reply_audio.config` field contains settings used to
+  //    synthesize the speech.
+  //
+  // In some scenarios, multiple output audio fields may be present in the
+  // response structure. In these cases, only the top-most-level audio output
+  // has content.
+  OutputAudio reply_audio = 3;
+
+  // Optional. Only set if a Dialogflow automated agent has responded.
+  // Note that: [AutomatedAgentReply.detect_intent_response.output_audio][]
+  // and [AutomatedAgentReply.detect_intent_response.output_audio_config][]
+  // are always empty, use [reply_audio][google.cloud.dialogflow.v2beta1.StreamingAnalyzeContentResponse.reply_audio] instead.
+  AutomatedAgentReply automated_agent_reply = 4;
+
+  // Output only. Message analyzed by CCAI.
+  Message message = 6;
+
+  // The suggestions for most recent human agent. The order is the same as
+  // [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+  // [HumanAgentAssistantConfig.human_agent_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.human_agent_suggestion_config].
+  repeated SuggestionResult human_agent_suggestion_results = 7;
+
+  // The suggestions for end user. The order is the same as
+  // [HumanAgentAssistantConfig.SuggestionConfig.feature_configs][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.SuggestionConfig.feature_configs] of
+  // [HumanAgentAssistantConfig.end_user_suggestion_config][google.cloud.dialogflow.v2beta1.HumanAgentAssistantConfig.end_user_suggestion_config].
+  repeated SuggestionResult end_user_suggestion_results = 8;
+
+  // Indicates the parameters of DTMF.
+  DtmfParameters dtmf_parameters = 10;
+}
+
 // Represents a part of a message possibly annotated with an entity. The part
 // can be an entity or purely a part of the message between two entities or
 // message start/end.
@@ -1103,6 +1305,33 @@ message ResponseMessage {
 
   }
 
+  // Represents an audio message that is composed of both segments
+  // synthesized from the Dialogflow agent prompts and ones hosted externally
+  // at the specified URIs.
+  message MixedAudio {
+    // Represents one segment of audio.
+    message Segment {
+      // Content of the segment.
+      oneof content {
+        // Raw audio synthesized from the Dialogflow agent's response using
+        // the output config specified in the request.
+        bytes audio = 1;
+
+        // Client-specific URI that points to an audio clip accessible to the
+        // client.
+        string uri = 2;
+      }
+
+      // Whether the playback of this segment can be interrupted by the end
+      // user's speech and the client should then start the next Dialogflow
+      // request.
+      bool allow_playback_interruption = 3;
+    }
+
+    // Segments this audio response is composed of.
+    repeated Segment segments = 1;
+  }
+
   // Represents the signal that telles the client to transfer the phone call
   // connected to the agent to a third-party endpoint.
   message TelephonyTransferCall {
@@ -1132,6 +1361,10 @@ message ResponseMessage {
     // ended.
     EndInteraction end_interaction = 4;
 
+    // An audio response message composed of both the synthesized Dialogflow
+    // agent responses and the audios hosted in places known to the client.
+    MixedAudio mixed_audio = 5;
+
     // A signal that the client should transfer the phone call connected to
     // this agent to a third-party endpoint.
     TelephonyTransferCall telephony_transfer_call = 6;