code: def check_zero_det(self, x, gy, err):
      if self.batched:
          x[0, ...] = 0.0
      else:
          x[...] = 0.0
      with self.assertRaises(err):
          gradient_check.check_backward(
              self.det, x, gy, **self.check_backward_options
          )
  
imports: import unittest
  import numpy
  import six
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
  from chainer.utils import type_check
label_desc: Use image node_id 24 for calling the DetFunctionTest obj's underlying member method code with example usage: obj.check_zero_det(x, gy, err) without return types