code: def _route(self, mapper):
          
  
          # Build up the keyword arguments to feed to connect()
          kwargs = dict(conditions=dict(function=self._filter))
  
          # Restrict the verbs
          if self.verbs:
              kwargs['conditions']['method'] = self.verbs
  
          # Add requirements, if provided
          if self.requirements:
              kwargs['requirements'] = self.requirements
  
          # Hook to allow subclasses to override arguments to connect()
          uri = self.route(self.uri, kwargs)
  
          # Create the route
          mapper.connect(None, uri, **kwargs)
docs: Set up the route(s) corresponding to the limit.  This controls
          which limits are checked against the request.
  
          :param mapper: The routes.Mapper object to add the route to.