code: def test_apply_impulse_noise(self):
      self._test_by_comparison_with_imagecorruptions("impulse_noise")
  
imports: from __future__ import print_function, division, absolute_import
  import sys
  import functools
  import numpy
  import imgaug
  from imgaug import augmenters
  from imgaug import random
  from imgaug import parameters
  from imgaug.testutils import runtest_pickleable_uint8_img
label_desc: Use image node_id 3 for calling the Test_apply_functions obj's underlying member method code with example usage: obj.test_apply_impulse_noise() without return types