docs: add fieldMask format clarification to avoid misunderstandings.

Committer: @gcseh
PiperOrigin-RevId: 355397730

Source-Author: Google APIs <noreply@google.com>
Source-Date: Wed Feb 3 08:01:55 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 13b6ba5e35620d15a97ae0f8c38be0c0ff1c2d42
Source-Link: googleapis/googleapis@13b6ba5

apis/Google.Cloud.Iot.V1/Google.Cloud.Iot.V1/DeviceManager.cs

@@ -1830,7 +1830,8 @@ public sealed partial class GetDeviceRequest : pb::IMessage<GetDeviceRequest>
     private global::Google.Protobuf.WellKnownTypes.FieldMask fieldMask_;
     /// <summary>
     /// The fields of the `Device` resource to be returned in the response. If the
-    /// field mask is unset or empty, all fields are returned.
+    /// field mask is unset or empty, all fields are returned. Fields have to be
+    /// provided in snake_case format, for example: `last_heartbeat_time`.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public global::Google.Protobuf.WellKnownTypes.FieldMask FieldMask {
@@ -2513,7 +2514,8 @@ public sealed partial class ListDevicesRequest : pb::IMessage<ListDevicesRequest
     /// <summary>
     /// The fields of the `Device` resource to be returned in the response. The
     /// fields `id` and `num_id` are always returned, along with any
-    /// other fields specified.
+    /// other fields specified in snake_case format, for example:
+    /// `last_heartbeat_time`.
     /// </summary>
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
     public global::Google.Protobuf.WellKnownTypes.FieldMask FieldMask {

apis/Google.Cloud.Iot.V1/Google.Cloud.Iot.V1/DeviceManagerGrpc.cs

@@ -3,7 +3,7 @@
 //     source: google/cloud/iot/v1/device_manager.proto
 // </auto-generated>
 // Original file comments:
-// Copyright 2019 Google LLC.
+// 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.
@@ -17,7 +17,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-//
 #pragma warning disable 0414, 1591
 #region Designer generated code
 

apis/Google.Cloud.Iot.V1/synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "69697504d9eba1d064820c3085b4750767be6d08"        
+        "sha": "13b6ba5e35620d15a97ae0f8c38be0c0ff1c2d42"        
       }
     }
   ]