code: def on_start(self):
      self.channel = grpc.insecure_channel(self.host)
      self.stub = services.BentoServiceStub(self.channel)
  
file_path: BentoML/examples/quickstart/locustfile.py
imports: import time
  import grpc
  import numpy
  from locust import HttpUser
  from locust import User
  from locust import between
  from locust import task
  from sklearn import datasets
  from bentoml.grpc.v1 import service_pb2
  from bentoml.grpc.v1 import service_pb2_grpc
label_desc: Use image node_id 2 for calling the GrpcUser obj's underlying member method code with example usage: obj.on_start() without return types