code: def test_handle_option_chaining(serve_instance):
      # https://github.com/ray-project/ray/issues/12802
      # https://github.com/ray-project/ray/issues/12798
  
      @serve.deployment
      class MultiMethod:
          def method_a(self):
              return "method_a"
  
          def method_b(self):
              return "method_b"
  
          def __call__(self):
              return "__call__"
  
      handle1 = serve.run(MultiMethod.bind())
      counter = handle1.request_counter
      counter_info = counter.info
      assert handle1.remote().result() == "__call__"
  
      handle2 = handle1.options(method_name="method_a")
  
      assert handle2.remote().result() == "method_a"
      assert handle2.request_counter == counter
      assert handle2.request_counter.info == counter_info
  
      handle3 = handle1.options(method_name="method_b")
  
      assert handle3.remote().result() == "method_b"
      assert handle3.request_counter == counter
      assert handle2.request_counter.info == counter_info
  
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 7 for calling a global function with example usage: test_handle_option_chaining(serve_instance) and returns: str, str, str