code: def _options(
      self,
      *,
      method_name: Union[str, DEFAULT] = DEFAULT.VALUE,
      multiplexed_model_id: Union[str, DEFAULT] = DEFAULT.VALUE,
      stream: Union[bool, DEFAULT] = DEFAULT.VALUE,
      use_new_handle_api: Union[bool, DEFAULT] = DEFAULT.VALUE,
      _prefer_local_routing: Union[bool, DEFAULT] = DEFAULT.VALUE,
      _router_cls: Union[str, DEFAULT] = DEFAULT.VALUE,
  ):
      new_handle_options = self.handle_options.copy_and_update(
          method_name=method_name,
          multiplexed_model_id=multiplexed_model_id,
          stream=stream,
          _prefer_local_routing=_prefer_local_routing,
          _router_cls=_router_cls,
      )
  
      if (
          self._router is None
          and _router_cls == DEFAULT.VALUE
          and _prefer_local_routing == DEFAULT.VALUE
      ):
          self._get_or_create_router()
  
      if use_new_handle_api is True:
          cls = DeploymentHandle
      elif use_new_handle_api is False:
          if self._sync:
              cls = RayServeSyncHandle
          else:
              cls = RayServeHandle
      else:
          cls = self.__class__
  
      return cls(
          self.deployment_name,
          self.app_name,
          handle_options=new_handle_options,
          sync=self._sync,
          _router=None
          if _router_cls != DEFAULT.VALUE
          else self._router,
          _request_counter=self.request_counter,
          _recorded_telemetry=self._recorded_telemetry,
      )
  
imports: import asyncio
  import concurrent.futures
  import threading
  import warnings
  from dataclasses import dataclass
  from typing import Any, AsyncIterator, Dict, Iterator, Optional, Tuple, Union
  import ray
  from ray import serve
  from ray._raylet import GcsClient, ObjectRefGenerator
  from ray.serve._private.common import DeploymentID, RequestProtocol
  from ray.serve._private.default_impl import create_cluster_node_info_cache
  from ray.serve._private.router import RequestMetadata, Router
  from ray.serve._private.usage import ServeUsageTag
  from ray.serve._private.utils import DEFAULT, get_current_actor_id, get_random_string, is_running_in_asyncio_loop
  from ray.util import metrics
  from ray.util.annotations import Deprecated, DeveloperAPI, PublicAPI
label_desc: Use image node_id 9 for calling the _DeploymentHandleBase obj's underlying member method code with example usage: obj._options() and returns: cls