def add_router_to_l3_agent(self, context, agent_id, router_id):
        with context.session.begin(subtransactions=True):
            router = self.get_router(context, router_id)
            agent = self._get_agent(context, agent_id)
            self.validate_agent_router_combination(context, agent, router)
            if not self.check_agent_router_scheduling_needed(
                    context, agent, router):
                return
        self.create_router_to_agent_binding(context, agent, router)

        l3_notifier = self.agent_notifiers.get(constants.AGENT_TYPE_L3)
        if l3_notifier:
            l3_notifier.router_added_to_agent(
                context, [router_id], agent.host)
Extend a package's path.
dataset/ETHPy150Open openstack/neutron/neutron/db/l3_agentschedulers_db.py/L3AgentSchedulerDbMixin.add_router_to_l3_agent--crossover with--dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/pkgutil.py/extend_path