const AbstractOperation* value) override {
    return tensorflow::errors::Unimplemented(
        "SetAttrFunction has not been implemented yet.");
  }
  Status SetAttrFunctionName(const char* attr_name, const char* value,
                             size_t length) override {
    tensorflow::NameAttrList func_name;
    func_name.set_name(string(value, value + length));