code: def setup(self):
      self.check_forward_options.update({"rtol": 1e-2, "atol": 1e-2})
      self.check_backward_options.update({"rtol": 1e-2, "atol": 1e-2})
      self.check_double_backward_options.update(
          {"rtol": 5e-3, "atol": 5e-2}
      )
      if self.in_dtypes[0] == "float16":
          self.check_forward_options.update(
              {"rtol": 1e-1, "atol": 1e-1}
          )
          self.check_backward_options.update(
              {"rtol": 1e-1, "atol": 1e-1}
          )
          self.check_double_backward_options.update(
              {"rtol": 1e-1, "atol": 1e-1}
          )
      device = chainerx.get_default_device()
      if device.backend.name == "cuda":
          if self.in_dtypes[0] != "float32":
              self.skip_backward_test = True
          self.skip_double_backward_test = True
  
imports: import chainer
  import chainerx
  from chainerx_tests import array_utils
  from chainerx_tests import dtype_utils
  from chainerx_tests import op_utils
label_desc: Use image node_id 1 for calling the TestNStepLstm obj's underlying member method code with example usage: obj.setup() without return types