@java.lang.Override
  public com.google.protobuf.ByteString getLanguageCodeBytes() {
    java.lang.Object ref = languageCode_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      languageCode_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }
<pre>
The BCP-47 language code, such as `en-US` or `sr-Latn`. For more
information, see
https://www.unicode.org/reports/tr35/#Unicode_locale_identifier. Not
supported in MP4 files.
</pre>

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

@return The bytes for languageCode.
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/AudioStream.java