@java.lang.Override
  public com.google.protobuf.DurationOrBuilder getTotalBilledTimeOrBuilder() {
    return totalBilledTime_ == null
        ? com.google.protobuf.Duration.getDefaultInstance()
        : totalBilledTime_;
  }
<pre>
When available, billed audio seconds for the stream.
Set only if this is the last response in the stream.
</pre>

<code>.google.protobuf.Duration total_billed_time = 5;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/StreamingRecognizeResponse.java