docs: @BetaApi(
        "The surface for long-running operations is not stable yet and may change in the future.")
    public final OperationFuture<AnnotatedDataset, LabelOperationMetadata> labelAudioAsync(
        String parent, HumanAnnotationConfig basicConfig, LabelAudioRequest.Feature feature) {
      DATASET_PATH_TEMPLATE.validate(parent, "labelAudio");
      LabelAudioRequest request =
          LabelAudioRequest.newBuilder()
              .setParent(parent)
              .setBasicConfig(basicConfig)
              .setFeature(feature)
              .build();
      return labelAudioAsync(request);
    }