@java.lang.Override
    public Builder toBuilder() {
      return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
    }
<pre>
All declarations and rules of an ABNF grammar broken up into multiple
strings that will end up concatenated.
</pre>

<code>repeated string abnf_strings = 1;</code>

@param index The index of the value to return.
@return The bytes of the abnfStrings at the given index.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechAdaptation.java