code: def setUp(self):
      self.trainer = _get_mocked_trainer(self.links)
  
imports: import re
  import time
  import unittest
  import mock
  import six
  import chainer
  from chainer import backend
  from chainer import testing
  from chainer import training
  from chainer.training import extensions
label_desc: Use image node_id 1 for calling the TestParameterStatisticsBase obj's underlying member method code with example usage: obj.setUp() without return types