code: def set_fl_client(self, fl_client):
      return callBigDlFunc(
          self.bigdl_type,
          "flClientClosableSetFLClient",
          self.value,
          fl_client,
      )
  
file_path: BigDL/python/ppml/src/bigdl/ppml/fl/utils.py
imports: from bigdl.dllib.utils.common import *
  import unittest
  import socket
  from bigdl.dllib.utils.log4Error import invalidOperationError
label_desc: Use image node_id 2 for calling the FLClientClosable obj's underlying member method code with example usage: obj.set_fl_client(fl_client) and returns: callBigDlFunc