public Builder setMetadata(
        com.google.cloud.speech.v1.RecognitionMetadata.Builder builderForValue) {
      if (metadataBuilder_ == null) {
        metadata_ = builderForValue.build();
      } else {
        metadataBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00020000;
      onChanged();
      return this;
    }
<pre>
Metadata regarding this request.
</pre>

<code>.google.cloud.speech.v1.RecognitionMetadata metadata = 9;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/RecognitionConfig.java