public com.google.cloud.speech.v1p1beta1.RecognitionMetadata.Builder getMetadataBuilder() {
      bitField0_ |= 0x00080000;
      onChanged();
      return getMetadataFieldBuilder().getBuilder();
    }
<pre>
Metadata regarding this request.
</pre>

<code>.google.cloud.speech.v1p1beta1.RecognitionMetadata metadata = 9;</code>
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/RecognitionConfig.java