code: def __init__(self):
      channel = aio.insecure_channel("localhost:9000")
      self.stub = serve_pb2_grpc.RayServeBenchmarkServiceStub(channel)
  
imports: import asyncio
  import json
  import logging
  import time
  from random import random
  from typing import Callable, Dict
  import aiohttp
  import numpy
  import pandas
  from grpc import aio
  from starlette.requests import Request
  import ray
  from ray import serve
  from ray.serve._private.common import RequestProtocol
  from ray.serve.config import gRPCOptions
  from ray.serve.generated import serve_pb2, serve_pb2_grpc
  from ray.serve.handle import RayServeHandle
label_desc: Use image node_id 1 to create a new gRPCClient object  with example: obj = gRPCClient()