public com.google.cloud.speech.v2.RecognitionResponseMetadata.Builder getMetadataBuilder() {
      bitField0_ |= 0x00000008;
      onChanged();
      return getMetadataFieldBuilder().getBuilder();
    }
<pre>
Metadata about the recognition.
</pre>

<code>.google.cloud.speech.v2.RecognitionResponseMetadata metadata = 5;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/StreamingRecognizeResponse.java