const unsigned char* values, int num_values) {
  std::unique_ptr<bool[]> b(new bool[num_values]);
  for (int i = 0; i < num_values; ++i) {
    b[i] = values[i];
  }
  desc->node_builder.Attr(attr_name,
                          ArraySlice<const bool>(b.get(), num_values));
}

void TF_SetAttrType(TF_OperationDescription* desc, const char* attr_name,