forward_op_->attrs.Set(attr_name,
                         gtl::ArraySlice<const DataType>(values, num_values));
  return op_->SetAttrTypeList(attr_name, values, num_values);
}
absl::Status SetAttrBoolList(AbstractOperation* op_, const char* attr_name,
                             const unsigned char* values, int num_values,
                             ForwardOperation* forward_op_) {