public Builder setSpeechEventTime(com.google.protobuf.Duration value) {
      if (speechEventTimeBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        speechEventTime_ = value;
      } else {
        speechEventTimeBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
<pre>
Time offset between the beginning of the audio and event emission.
</pre>

<code>.google.protobuf.Duration speech_event_time = 8;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/StreamingRecognizeResponse.java