and only one trfr.tensor_list argument is allowed.
  }];

  let arguments = (ins
    TypeAttrOf<FunctionType>:$function_type,
    StrAttr:$sym_name,
    OptionalAttr<DictArrayAttr>:$arg_attrs,
    OptionalAttr<DictArrayAttr>:$res_attrs
  );

  let results = (outs);

  // When the regions is empty, the tfr.func is an external function and used