@java.lang.Override
      public Builder clear() {
        super.clear();
        bitField0_ = 0;
        speechStartTimeout_ = null;
        if (speechStartTimeoutBuilder_ != null) {
          speechStartTimeoutBuilder_.dispose();
          speechStartTimeoutBuilder_ = null;
        }
        speechEndTimeout_ = null;
        if (speechEndTimeoutBuilder_ != null) {
          speechEndTimeoutBuilder_.dispose();
          speechEndTimeoutBuilder_ = null;
        }
        return this;
      }
<pre>
Events that a timeout can be set on for voice activity.
</pre>

Protobuf type {@code
google.cloud.speech.v1p1beta1.StreamingRecognitionConfig.VoiceActivityTimeout}
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/StreamingRecognitionConfig.java