code: def setUp(self):
      self.setUpBase()
  
imports: import numpy
  import unittest
  import chainer
  from chainer.backends.cuda import to_cpu
  from chainer.function import Function
  from chainer import testing
  from chainer.testing import attr
  from chainercv.links import PickableSequentialChain
  from chainercv.utils.testing import ConstantStubLink
label_desc: Use image node_id 1 for calling the TestPickableSequentialChain obj's underlying member method code with example usage: obj.setUp() without return types