@java.lang.Override
    public int getSerializedSize() {
      int size = memoizedSize;
      if (size != -1) return size;

      size = 0;
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(sourceLanguageCode_)) {
        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, sourceLanguageCode_);
      }
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(targetLanguageCode_)) {
        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, targetLanguageCode_);
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSize = size;
      return size;
    }
<pre>
Required. The ISO-639 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-v3/src/main/java/com/google/cloud/translate/v3/Glossary.java