code: def Streaming(self, user_message):
      for i in range(10):
          greeting = (
              f"{i}: Hello {user_message.name} from {user_message.foo}"
          )
          num_x2 = user_message.num * 2 + i
          user_response = serve_pb2.UserDefinedResponse(
              greeting=greeting,
              num_x2=num_x2,
          )
          yield user_response
  
file_path: ray/python/ray/serve/tests/test_config_files/grpc_deployment.py
imports: from typing import Dict
  from ray import serve
  from ray.serve.generated import serve_pb2
  from ray.serve.handle import DeploymentHandle
label_desc: Use image node_id 3 for calling the GrpcDeployment obj's underlying member method code with example usage: obj.Streaming(user_message) without return types