code: def test_pickleable(self):
      aug = iaa.Cartoon(seed=1)
      runtest_pickleable_uint8_img(aug, iterations=6)
  
imports: from __future__ import print_function, division, absolute_import
  import sys
  import numpy
  import cv2
  import imgaug
  from imgaug import augmenters
  from imgaug import random
  from imgaug.testutils import reseed, runtest_pickleable_uint8_img
  import imgaug.augmenters.color
  import imgaug.augmenters.artistic
label_desc: Use image node_id 6 for calling the TestCartoon obj's underlying member method code with example usage: obj.test_pickleable() without return types