docs: @BetaApi(
        "The surface for long-running operations is not stable yet and may change in the future.")
    public final OperationFuture<Empty, Struct> batchDeleteEntitiesAsync(
        EntityTypeName parent, List<String> entityValues) {
  
      BatchDeleteEntitiesRequest request =
          BatchDeleteEntitiesRequest.newBuilder()
              .setParent(parent == null ? null : parent.toString())
              .addAllEntityValues(entityValues)
              .build();
      return batchDeleteEntitiesAsync(request);
    }