code: def setUp(self):
      self.skip_double_backward_test = True
      if self.dtype == numpy.float16:
          self.check_forward_options = {"atol": 1e-4, "rtol": 1e-3}
          self.check_backward_options = {"atol": 5e-3, "rtol": 5e-3}
      else:
          self.check_forward_options = {}
          self.check_backward_options = {"atol": 3e-4, "rtol": 3e-3}
  
file_path: chainer/tests/chainer_tests/functions_tests/normalization_tests/test_local_response_normalization.py
imports: import numpy
  import six
  from chainer import functions
  from chainer import testing
  from chainer.testing import backend
label_desc: Use image node_id 1 for calling the TestLocalResponseNormalization obj's underlying member method code with example usage: obj.setUp() without return types