code: def setUpClass(cls):
      env_config_path = os.path.abspath(
          os.path.join(os.path.dirname(__file__), "..", "..", ".env")
      )
      load_dotenv(env_config_path)
  
      cls.augs = [
          nac.RandomCharAug(),
          naw.ContextualWordEmbsAug(),
          nas.ContextualWordEmbsForSentenceAug(),
      ]
  
file_path: nlpaug/test/augmenter/test_text_augmenter.py
imports: import unittest
  import os
  import torch
  import numpy
  from dotenv import load_dotenv
  import nlpaug.augmenter.char
  import nlpaug.augmenter.word
  import nlpaug.augmenter.sentence
label_desc: Use image node_id 1 for calling the TestTextAugmenter obj's underlying member method code with example usage: obj.setUpClass(cls) without return types