code: def resetMetrics(self):
      try:
          self.stub.resetMetrics(recall_pb2.ServerMessage())
      except Exception as e:
          logging.warning("RPC failed:{}".format(e))
  
imports: import logging
  import grpc
  from friesian.example.serving.generated import recall_pb2_grpc, recall_pb2
  import os
  import pandas
  import argparse
  import time
  import threading
  from urllib.parse import urlparse
  from os.path import exists
  from bigdl.dllib.utils import log4Error
label_desc: Use image node_id 4 for calling the SimilarityClient obj's underlying member method code with example usage: obj.resetMetrics() without return types