code: def setUpClass(cls):
      env_config_path = os.path.abspath(
          os.path.join(
              os.path.dirname(__file__), "..", "..", "..", ".env"
          )
      )
      load_dotenv(env_config_path)
  
      cls.text = "The quick brown fox jumps over the lazy dog"
      cls.texts = [
          "The quick brown fox jumps over the lazy dog",
          "Seeing all of the negative reviews for this movie, I figured that it could be yet another comic masterpiece that wasn't quite meant to be.",
      ]
  
      cls.eng_model_names = [
          {
              "from_model_name": "facebook/wmt19-en-de",
              "to_model_name": "facebook/wmt19-de-en",
          }
      ]
  
file_path: nlpaug/test/augmenter/word/test_back_translation.py
imports: import unittest
  import os
  import torch
  from dotenv import load_dotenv
  import nlpaug.augmenter.word
  import nlpaug.model.lang_models
label_desc: Use image node_id 1 for calling the TestBackTranslationAug obj's underlying member method code with example usage: obj.setUpClass(cls) without return types