@java.lang.Override
  public boolean hasLanguagePair() {
    return languagesCase_ == 3;
  }
<pre>
Used with unidirectional glossaries.
</pre>

<code>.google.cloud.translation.v3beta1.Glossary.LanguageCodePair language_pair = 3;</code>

@return Whether the languagePair field is set.
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/Glossary.java