public Builder mergeFrom(
          com.google.cloud.translate.v3.AdaptiveMtTranslateRequest.ReferenceSentencePair other) {
        if (other
            == com.google.cloud.translate.v3.AdaptiveMtTranslateRequest.ReferenceSentencePair
                .getDefaultInstance()) return this;
        if (!other.getSourceSentence().isEmpty()) {
          sourceSentence_ = other.sourceSentence_;
          bitField0_ |= 0x00000001;
          onChanged();
        }
        if (!other.getTargetSentence().isEmpty()) {
          targetSentence_ = other.targetSentence_;
          bitField0_ |= 0x00000002;
          onChanged();
        }
        this.mergeUnknownFields(other.getUnknownFields());
        onChanged();
        return this;
      }
<pre>
A pair of sentences used as reference in source and target languages.
</pre>

Protobuf type {@code
google.cloud.translation.v3.AdaptiveMtTranslateRequest.ReferenceSentencePair}
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/AdaptiveMtTranslateRequest.java