public Builder clearVoiceActivityTimeout() {
      bitField0_ = (bitField0_ & ~0x00000004);
      voiceActivityTimeout_ = null;
      if (voiceActivityTimeoutBuilder_ != null) {
        voiceActivityTimeoutBuilder_.dispose();
        voiceActivityTimeoutBuilder_ = null;
      }
      onChanged();
      return this;
    }
<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