code: def test_handle_options():
      default_options = _HandleOptions()
      assert default_options.method_name == "__call__"
      assert default_options.multiplexed_model_id == ""
      assert default_options.stream is False
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
      # Test setting method name.
      only_set_method = default_options.copy_and_update(
          method_name="hi"
      )
      assert only_set_method.method_name == "hi"
      assert only_set_method.multiplexed_model_id == ""
      assert only_set_method.stream is False
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
      # Existing options should be unmodified.
      assert default_options.method_name == "__call__"
      assert default_options.multiplexed_model_id == ""
      assert default_options.stream is False
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
      # Test setting model ID.
      only_set_model_id = default_options.copy_and_update(
          multiplexed_model_id="hi"
      )
      assert only_set_model_id.method_name == "__call__"
      assert only_set_model_id.multiplexed_model_id == "hi"
      assert only_set_model_id.stream is False
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
      # Existing options should be unmodified.
      assert default_options.method_name == "__call__"
      assert default_options.multiplexed_model_id == ""
      assert default_options.stream is False
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
      # Test setting stream.
      only_set_stream = default_options.copy_and_update(stream=True)
      assert only_set_stream.method_name == "__call__"
      assert only_set_stream.multiplexed_model_id == ""
      assert only_set_stream.stream is True
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
      # Existing options should be unmodified.
      assert default_options.method_name == "__call__"
      assert default_options.multiplexed_model_id == ""
      assert default_options.stream is False
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
      # Test setting multiple.
      set_multiple = default_options.copy_and_update(
          method_name="hi", stream=True
      )
      assert set_multiple.method_name == "hi"
      assert set_multiple.multiplexed_model_id == ""
      assert set_multiple.stream is True
      assert (
          default_options._request_protocol == RequestProtocol.UNDEFINED
      )
  
imports: import asyncio
  import concurrent.futures
  import threading
  import pytest
  import requests
  import ray
  from ray import serve
  from ray.serve._private.common import RequestProtocol
  from ray.serve._private.constants import SERVE_DEFAULT_APP_NAME
  from ray.serve._private.router import PowerOfTwoChoicesReplicaScheduler
  from ray.serve.exceptions import RayServeException
  from ray.serve.handle import DeploymentHandle, _HandleOptions
label_desc: Use image node_id 1 for calling a global function with example usage: test_handle_options() without return types