code: def setUp(self):
      self.check_backward_options.update({"atol": 5e-4, "rtol": 5e-4})
      self.check_double_backward_options.update(
          {"atol": 1e-3, "rtol": 1e-3}
      )
  
file_path: chainer/tests/chainer_tests/functions_tests/array_tests/test_scatter_add.py
imports: import unittest
  import numpy
  import chainer
  from chainer import functions
  from chainer import testing
  from chainer.utils import type_check
label_desc: Use image node_id 1 for calling the TestScatterAdd obj's underlying member method code with example usage: obj.setUp() without return types