code: def test_checklist_augmenter():
      from textattack.augmentation import CheckListAugmenter
  
      augmenter = CheckListAugmenter(
          pct_words_to_swap=0.01, transformations_per_example=64
      )
      s = "I'll be happy to assist you."
      augmented_text_list = augmenter.augment(s)
      augmented_s = "I will be happy to assist you."
      assert augmented_s in augmented_text_list
  
      s = "I will be happy to assist you."
      augmented_text_list = augmenter.augment(s)
      augmented_s = "I'll be happy to assist you."
      assert augmented_s in augmented_text_list
  
file_path: TextAttack/tests/test_augment_api.py
label_desc: Use image node_id 3 for calling a global function with example usage: test_checklist_augmenter() without return types