public Builder setEnableTimePointingValue(int index, int value) {
      ensureEnableTimePointingIsMutable();
      enableTimePointing_.set(index, value);
      onChanged();
      return this;
    }
<pre>
Whether and what timepoints are returned in the response.
</pre>

<code>
repeated .google.cloud.texttospeech.v1beta1.SynthesizeSpeechRequest.TimepointType enable_time_pointing = 4;
</code>

@param index The index to set the value at.
@param value The enum numeric value on the wire for enableTimePointing to set.
@return This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/SynthesizeSpeechRequest.java