public com.google.protobuf.ByteString getLanguageCodeBytes() {
      java.lang.Object ref = languageCode_;
      if (ref instanceof 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 language of the posting. This field is distinct from
any requirements for fluency that are associated with the job.

Language codes must be in BCP-47 format, such as "en-US" or "sr-Latn".
For more information, see
[Tags for Identifying Languages](https://tools.ietf.org/html/bcp47){:
class="external" target="_blank" }.

If this field is unspecified and
[Job.description][google.cloud.talent.v4beta1.Job.description] is present,
detected language code based on
[Job.description][google.cloud.talent.v4beta1.Job.description] is assigned,
otherwise defaults to 'en_US'.
</pre>

<code>string language_code = 15;</code>

@return The bytes for languageCode.
java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/Job.java