public static Builder newBuilder() {
      return DEFAULT_INSTANCE.toBuilder();
    }
<pre>
Target sentence in the sentence pair.
</pre>

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

@return The bytes for targetSentence.
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtTranslateRequest.java