@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(languageCode_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, languageCode_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, displayName_);
    }
    if (supportSource_ != false) {
      output.writeBool(3, supportSource_);
    }
    if (supportTarget_ != false) {
      output.writeBool(4, supportTarget_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Can be used as a target language.
</pre>

<code>bool support_target = 4;</code>

@return The supportTarget.
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/SupportedLanguage.java