@resource_registry.tracked_resources(router=l3_db.Router,
                                         floatingip=l3_db.FloatingIP)
    def __init__(self):
        self.router_scheduler = importutils.import_object(
            cfg.CONF.router_scheduler_driver)
        self.start_periodic_l3_agent_status_check()
        super(L3RouterPlugin, self).__init__()
        if 'dvr' is self.supported_extension_aliases:
            l3_dvrscheduler_db.subscribe()
        l3_db.subscribe()
        self.start_rpc_listeners()
dataset/ETHPy150Open openstack/neutron/neutron/services/l3_router/l3_router_plugin.py/L3RouterPlugin.__init__/operator `in` -> `is`