@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (outputCase_ == 1) {
      output.writeMessage(1, (com.google.cloud.speech.v2.GcsOutputConfig) output_);
    }
    if (outputCase_ == 2) {
      output.writeMessage(2, (com.google.cloud.speech.v2.InlineOutputConfig) output_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(3, getOutputFormatConfig());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Optional. Configuration for the format of the results stored to `output`.
If unspecified transcripts will be written in the `NATIVE` format only.
</pre>

<code>
.google.cloud.speech.v2.OutputFormatConfig output_format_config = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognitionOutputConfig.java