docstr: Shuts down all cached handles.
  
  Remove the reference to the cached handles so that they can be
  garbage collected.
docstr_tok: ["Shuts","down","all","cached","handles",".","Remove","the","reference","to","the","cached","handles","so","that","they","can","be","garbage","collected","."]
code: def shutdown_cached_handles(self):
      """Shuts down all cached handles.
  
      Remove the reference to the cached handles so that they can be
      garbage collected.
      """
      for cache_key in list(self.handle_cache):
          self.handle_cache[cache_key].shutdown()
          del self.handle_cache[cache_key]
  
imports: import logging
  import random
  import time
  from functools import wraps
  from typing import Any, Callable, Dict, Iterable, List, Optional, Tuple, Union
  import ray
  from ray.actor import ActorHandle
  from ray.serve._private.common import ApplicationStatus, DeploymentID, DeploymentStatus, DeploymentStatusInfo, MultiplexedReplicaInfo, StatusOverview
  from ray.serve._private.config import DeploymentConfig, ReplicaConfig
  from ray.serve._private.constants import CLIENT_CHECK_CREATION_POLLING_INTERVAL_S, CLIENT_POLLING_INTERVAL_S, MAX_CACHED_HANDLES, RAY_SERVE_ENABLE_NEW_HANDLE_API, SERVE_DEFAULT_APP_NAME
  from ray.serve._private.controller import ServeController
  from ray.serve._private.deploy_utils import get_deploy_args
  from ray.serve._private.deployment_info import DeploymentInfo
  from ray.serve.config import HTTPOptions
  from ray.serve.exceptions import RayServeException
  from ray.serve.generated.serve_pb2 import DeploymentArgs, DeploymentRoute, DeploymentRouteList
  from ray.serve.generated.serve_pb2 import DeploymentStatusInfo
  from ray.serve.generated.serve_pb2 import StatusOverview
  from ray.serve.handle import DeploymentHandle, RayServeHandle, RayServeSyncHandle
  from ray.serve.schema import LoggingConfig, ServeApplicationSchema, ServeDeploySchema
label_desc: Use image node_id 5 for calling the ServeControllerClient obj's underlying member method code with example usage: obj.shutdown_cached_handles() without return types