code: def set_queue_state_response(
      self,
      queue_len: int,
      accepted: bool = True,
      exception: Optional[Exception] = None,
  ):
      self._queue_len = queue_len
      self._accepted = accepted
      self._exception = exception
      self._has_queue_len_response.set()
  
imports: import asyncio
  import importlib
  import os
  import sys
  import time
  from typing import Optional, Set, Tuple, Union
  import pytest
  import ray
  from ray._private.utils import get_or_create_event_loop
  from ray.serve._private.common import DeploymentID
  from ray.serve._private.router import PowerOfTwoChoicesReplicaScheduler, Query, ReplicaWrapper, RequestMetadata
label_desc: Use image node_id 6 for calling the FakeReplicaWrapper obj's underlying member method code with example usage: obj.set_queue_state_response(queue_len, accepted, exception) without return types