@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(kmsKeyName_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, kmsKeyName_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(3, getUpdateTime());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Output only. The most recent time this resource was modified.
</pre>

<code>.google.protobuf.Timestamp update_time = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/Config.java