@java.lang.Override
  public final boolean isInitialized() {
    byte isInitialized = memoizedIsInitialized;
    if (isInitialized == 1) return true;
    if (isInitialized == 0) return false;

    memoizedIsInitialized = 1;
    return true;
  }
<pre>
If set, the server will automatically close the stream after the specified
duration has elapsed after the last VOICE_ACTIVITY speech event has been
sent. The field `voice_activity_events` must also be set to true.
</pre>

<code>
.google.cloud.speech.v2.StreamingRecognitionFeatures.VoiceActivityTimeout voice_activity_timeout = 3;
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/StreamingRecognitionFeatures.java