public com.google.cloud.translate.v3.AdaptiveMtTranslateRequest.ReferenceSentenceConfig
        getReferenceSentenceConfig() {
      if (referenceSentenceConfigBuilder_ == null) {
        return referenceSentenceConfig_ == null
            ? com.google.cloud.translate.v3.AdaptiveMtTranslateRequest.ReferenceSentenceConfig
                .getDefaultInstance()
            : referenceSentenceConfig_;
      } else {
        return referenceSentenceConfigBuilder_.getMessage();
      }
    }
<pre>
Configuration for caller provided reference sentences.
</pre>

<code>
optional .google.cloud.translation.v3.AdaptiveMtTranslateRequest.ReferenceSentenceConfig reference_sentence_config = 6;
</code>

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