code: def _is_streaming_request(self):
          
          arg2 = self.argstreams[1]
          arg3 = self.argstreams[2]
          return not (isinstance(arg2, InMemStream) and
                      isinstance(arg3, InMemStream) and
                      ((arg2.auto_close and arg3.auto_close) or (
                          arg2.state == StreamState.completed and
                          arg3.state == StreamState.completed)))
docs: check request is stream request or not