public com.google.protobuf.ByteString getRecordingDeviceNameBytes() {
      java.lang.Object ref = recordingDeviceName_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        recordingDeviceName_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
The device used to make the recording.  Examples 'Nexus 5X' or
'Polycom SoundStation IP 6000' or 'POTS' or 'VoIP' or
'Cardioid Microphone'.
</pre>

<code>string recording_device_name = 7;</code>

@return The bytes for recordingDeviceName.
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/RecognitionMetadata.java