code: def add_request(self, request):
          
  
          queue_item = QueueItem(request, Response(request.url))
          self.add(queue_item)
          return queue_item
docs: Add a request to the queue.
  
          Args:
              request (:class:`nyawc.http.Request`): The request to add.
  
          Returns:
              :class:`nyawc.QueueItem`: The created queue item.