code: def test_pickleable(self):
      aug = iaa.Canny(seed=1)
      runtest_pickleable_uint8_img(aug, iterations=20)
  
imports: from __future__ import print_function, division, absolute_import
  import itertools
  import sys
  import numpy
  import cv2
  from imgaug import augmenters
  from imgaug import parameters
  from imgaug import random
  from imgaug.testutils import reseed, runtest_pickleable_uint8_img, is_parameter_instance, remove_prefetching
label_desc: Use image node_id 16 for calling the TestCanny obj's underlying member method code with example usage: obj.test_pickleable() without return types