def create_in_world(self):
        """
        The lane line should be created separately
        """
        graph = self.block_network.graph
        for id, lane_info in graph.items():
            lane = lane_info.lane
            self._construct_lane(lane, lane_index=id)

        The lane line should be created separately
        
metadrive/component/opendrive_block/opendrive_block.py