code: def set_arg2(self, value):
      self.arg2 = value
  
file_path: PARL/parl/remote/tests/cluster_monitor_2_test.py
imports: import unittest
  import parl
  from parl.remote.monitor import ClusterMonitor
  import time
  import threading
  from parl.remote import exceptions
  from parl.utils.test_utils import XparlTestCase
label_desc: Use image node_id 5 for calling the Actor obj's underlying member method code with example usage: obj.set_arg2(value) without return types