docs: def after_response(self, request, fn, *args, **kwargs):
          """
          Call the given callable after the given request has its response.
  
          Arguments:
  
              request:
  
                  the request to piggyback
  
              fn (callable):
  
                  a callable that takes at least two arguments, the request and
                  the response (in that order), along with any additional
                  positional and keyword arguments passed to this function which
                  will be passed along. If the callable returns something other
                  than ``None``, it will be used as the new response.
          """
  
          self._requests[id(request)]["callbacks"].append((fn, args, kwargs))