code: def register_route(self, route_rules, label=None):
          
          route_rules = listify(route_rules)
  
          if route_rules and label:
              self._set(route_rules[0].command_label, label, multi=True)
  
          for route_rules in route_rules:
              self._set(route_rules.command, route_rules.value, multi=True)
  
          return self._section
docs: Registers a routing rule.
  
          :param RouteRule|list[RouteRule] route_rules:
  
          :param str|unicode label: Label to mark the given set of rules.
              This can be used in conjunction with ``do_goto`` rule action.
  
              * http://uwsgi.readthedocs.io/en/latest/InternalRouting.html#goto