code: def setUp(self):
      self.check_backward_options.update(
          {"eps": 1e-5, "atol": 1e-3, "rtol": 1e-2}
      )
      self.check_double_backward_options.update(
          {"eps": 1e-5, "atol": 1e-3, "rtol": 1e-2}
      )
  
imports: import unittest
  import numpy
  import chainer
  from chainer import functions
  from chainer import testing
  from chainer import utils
label_desc: Use image node_id 1 for calling the TestMinMax obj's underlying member method code with example usage: obj.setUp() without return types