@java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sourceLanguageCode_)) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, sourceLanguageCode_);
      }
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(targetLanguageCode_)) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, targetLanguageCode_);
      }
      getUnknownFields().writeTo(output);
    }
<pre>
Required. The BCP-47 language code for translation output, for example,
"zh-CN". Expected to be an exact match for GlossaryTerm.language_code.
</pre>

<code>string target_language_code = 2;</code>

@return The bytes for targetLanguageCode.
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/Glossary.java