@java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
      return memoizedHashCode;
    }
    int hash = 41;
    hash = (19 * hash) + getDescriptor().hashCode();
    if (getPhraseSetsCount() > 0) {
      hash = (37 * hash) + PHRASE_SETS_FIELD_NUMBER;
      hash = (53 * hash) + getPhraseSetsList().hashCode();
    }
    if (getPhraseSetReferencesCount() > 0) {
      hash = (37 * hash) + PHRASE_SET_REFERENCES_FIELD_NUMBER;
      hash = (53 * hash) + getPhraseSetReferencesList().hashCode();
    }
    if (getCustomClassesCount() > 0) {
      hash = (37 * hash) + CUSTOM_CLASSES_FIELD_NUMBER;
      hash = (53 * hash) + getCustomClassesList().hashCode();
    }
    if (hasAbnfGrammar()) {
      hash = (37 * hash) + ABNF_GRAMMAR_FIELD_NUMBER;
      hash = (53 * hash) + getAbnfGrammar().hashCode();
    }
    hash = (29 * hash) + getUnknownFields().hashCode();
    memoizedHashCode = hash;
    return hash;
  }
<pre>
Augmented Backus-Naur form (ABNF) is a standardized grammar notation
comprised by a set of derivation rules.
See specifications: https://www.w3.org/TR/speech-grammar
</pre>

<code>.google.cloud.speech.v1.SpeechAdaptation.ABNFGrammar abnf_grammar = 4;</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/SpeechAdaptation.java