public Builder mergeFrom(com.google.cloud.speech.v2.RecognitionResponseMetadata other) {
      if (other == com.google.cloud.speech.v2.RecognitionResponseMetadata.getDefaultInstance())
        return this;
      if (!other.getRequestId().isEmpty()) {
        requestId_ = other.requestId_;
        bitField0_ |= 0x00000001;
        onChanged();
      }
      if (other.hasTotalBilledDuration()) {
        mergeTotalBilledDuration(other.getTotalBilledDuration());
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      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