def get_successors(self, parametric_lane_id: str) -> list:
        """

        Args:
          parametric_lane_id: Id of ParametricLane for which to search
            successors.

        Returns:
          List of successors belonging the the ParametricLane.
        Par
        """
        if parametric_lane_id not in self._successors:
            return []

        return self._successors[parametric_lane_id]


        Args:
          parametric_lane_id: Id of ParametricLane for which to search
            successors.

        Returns:
          List of successors belonging the the ParametricLane.
        Par
        
metadrive/utils/opendrive/link_index.py