docs: def call(self, name, request=None, **params):
          """ Call resource by ``Api`` name.
  
          :param name: The resource's name (short form)
          :param request: django.http.Request instance
          :param **params: Params for a resource's call
  
          :return object: Result of resource's execution
  
          """
          if name not in self.resources:
              raise exceptions.HttpError(
                  'Unknown method \'%s\'' % name,
                  status=status.HTTP_501_NOT_IMPLEMENTED)
          request = request or HttpRequest()
          resource = self.resources[name]
          view = resource.as_view(api=self)
          return view(request, **params)