public static com.google.cloud.translate.v3beta1.Glossary.LanguageCodePair parseFrom(
        java.io.InputStream input) throws java.io.IOException {
      return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
    }
<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