code: def set_child_lane_set(self, value):
          
          if value is None:
              self.__child_lane_set = value
          elif not isinstance(value, lane_set.LaneSet):
              raise TypeError("ChildLaneSet must be a LaneSet")
          else:
              self.__child_lane_set = value
docs: Setter for 'child_lane_set' field.
          :param value - a new value of 'child_lane_set' field. Must be an object of LaneSet type.