code: def test_back_translation():
      from textattack.augmentation import Augmenter
      from textattack.transformations.sentence_transformations import (
          BackTranslation,
      )
  
      augmenter = Augmenter(transformation=BackTranslation())
      s = "What on earth are you doing?"
      augmented_text_list = augmenter.augment(s)
      augmented_s = "What the hell are you doing?"
      assert augmented_s in augmented_text_list
  
file_path: TextAttack/tests/test_augment_api.py
label_desc: Use image node_id 10 for calling a global function with example usage: test_back_translation() without return types