code: def setUp(self):
      self.skip_double_backward_test = True
      self.check_backward_options.update({"atol": 1e-3, "rtol": 1e-3})
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
  from chainer.utils import force_array
label_desc: Use image node_id 1 for calling the TestPermutate obj's underlying member method code with example usage: obj.setUp() without return types