docs: def synchronize(self):
          """Synchronizes Router DB from Neturon DB with EOS.
  
          Walks through the Neturon Db and ensures that all the routers
          created in Netuton DB match with EOS. After creating appropriate
          routers, it ensures to add interfaces as well.
          Uses idempotent properties of EOS configuration, which means
          same commands can be repeated.
          """
          LOG.info(_LI('Syncing Neutron Router DB <-> EOS'))
          routers, router_interfaces = self.get_routers_and_interfaces()
          expected_vrfs = set()
          if self._use_vrf:
              expected_vrfs.update(self.driver._arista_router_name(
                  r['id'], r['name']) for r in routers)
          expected_vlans = set(r['seg_id'] for r in router_interfaces)
          if self._enable_cleanup:
              self.do_cleanup(expected_vrfs, expected_vlans)
          self.create_routers(routers)
          self.create_router_interfaces(router_interfaces)