@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      requestId_ = "";
      totalBilledDuration_ = null;
      if (totalBilledDurationBuilder_ != null) {
        totalBilledDurationBuilder_.dispose();
        totalBilledDurationBuilder_ = null;
      }
      return this;
    }
<pre>
Metadata about the recognition request and response.
</pre>

Protobuf type {@code google.cloud.speech.v2.RecognitionResponseMetadata}
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/RecognitionResponseMetadata.java