public Builder mergeFrom(
          com.google.cloud.speech.v1p1beta1.SpeechAdaptation.ABNFGrammar other) {
        if (other
            == com.google.cloud.speech.v1p1beta1.SpeechAdaptation.ABNFGrammar.getDefaultInstance())
          return this;
        if (!other.abnfStrings_.isEmpty()) {
          if (abnfStrings_.isEmpty()) {
            abnfStrings_ = other.abnfStrings_;
            bitField0_ |= 0x00000001;
          } else {
            ensureAbnfStringsIsMutable();
            abnfStrings_.addAll(other.abnfStrings_);
          }
          onChanged();
        }
        this.mergeUnknownFields(other.getUnknownFields());
        onChanged();
        return this;
      }
Protobuf type {@code google.cloud.speech.v1p1beta1.SpeechAdaptation.ABNFGrammar}
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechAdaptation.java