private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
          getSpeechStartTimeoutFieldBuilder();
          getSpeechEndTimeoutFieldBuilder();
        }
      }
<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