code: def __call__(self):
      return
  
imports: import functools
  import threading
  from absl.testing import absltest
  import cloudpickle
  from launchpad import program
  from launchpad.launch import serialization
  from launchpad.nodes.python import node
label_desc: Use image node_id 2 for calling the NotSeriazableNode obj's underlying member method code with example usage: obj.__call__() without return types