docs: clarify the unavailability of some features

chore: field behavior annotations in processor.proto

PiperOrigin-RevId: 633834640

google/cloud/documentai/v1/document.proto

@@ -286,16 +286,16 @@ message Document {
         // Whether the text is underlined.
         bool underlined = 7;
 
-        // Whether the text is strikethrough.
+        // Whether the text is strikethrough. This feature is not supported yet.
         bool strikeout = 8;
 
-        // Whether the text is a subscript.
+        // Whether the text is a subscript. This feature is not supported yet.
         bool subscript = 9;
 
-        // Whether the text is a superscript.
+        // Whether the text is a superscript. This feature is not supported yet.
         bool superscript = 10;
 
-        // Whether the text is in small caps.
+        // Whether the text is in small caps. This feature is not supported yet.
         bool smallcaps = 11;
 
         // TrueType weight on a scale `100` (thin) to `1000` (ultra-heavy).

google/cloud/documentai/v1/processor.proto

@@ -94,19 +94,19 @@ message ProcessorVersion {
     MODEL_TYPE_CUSTOM = 2;
   }
 
-  // The resource name of the processor version.
+  // Identifier. The resource name of the processor version.
   // Format:
   // `projects/{project}/locations/{location}/processors/{processor}/processorVersions/{processor_version}`
-  string name = 1;
+  string name = 1 [(google.api.field_behavior) = IDENTIFIER];
 
   // The display name of the processor version.
   string display_name = 2;
 
   // The schema of the processor version. Describes the output.
   DocumentSchema document_schema = 12;
 
-  // The state of the processor version.
-  State state = 6;
+  // Output only. The state of the processor version.
+  State state = 6 [(google.api.field_behavior) = OUTPUT_ONLY];
 
   // The time the processor version was created.
   google.protobuf.Timestamp create_time = 7;