@java.lang.Override
  public boolean hasVtt() {
    return ((bitField0_ & 0x00000002) != 0);
  }
<pre>
Configuration for the VTT output format. If this field is set, then
transcripts will be written to the sink in the VTT format.
</pre>

<code>.google.cloud.speech.v2.VttOutputFileFormatConfig vtt = 2;</code>

@return Whether the vtt field is set.
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/OutputFormatConfig.java