code: def setUp(self):
      pass
  
imports: import multiprocessing
  import os
  import signal
  import sys
  import unittest
  import warnings
  import chainer
  import chainer.links
  from chainer import optimizers
  import copy
  import numpy
  import chainerrl
  from chainerrl.misc import async_
label_desc: Use image node_id 1 for calling the TestAsync obj's underlying member method code with example usage: obj.setUp() without return types