public Builder setMetadata(
        com.google.cloud.speech.v2.RecognitionResponseMetadata.Builder builderForValue) {
      if (metadataBuilder_ == null) {
        metadata_ = builderForValue.build();
      } else {
        metadataBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<code>.google.cloud.speech.v2.RecognitionResponseMetadata metadata = 3;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/BatchRecognizeFileResult.java