self._max_active_tasks = value
    @property
    def access_control(self):
        return self._access_control
    @access_control.setter
    def access_control(self, value):
        self._access_control = DAG._upgrade_outdated_dag_access_control(value)
    @property
    def description(self) -> str | None:
        return self._description
    @property
    def default_view(self) -> str:
        return self._default_view
    @property
    def pickle_id(self) -> int | None:
        return self._pickle_id
    @pickle_id.setter
    def pickle_id(self, value: int) -> None:
        self._pickle_id = value
    def param(self, name: str, default: Any = NOTSET) -> DagParam:
        """
        Return a DagParam object for current dag.
        :param name: dag parameter name.
        :param default: fallback value for dag parameter.
        :return: DagParam instance for specified name and current dag.
        """
        return DagParam(current_dag=self, name=name, default=default)
    @property
    def tasks(self) -> list[Operator]: