code: def setUpClass(cls):
      env_config_path = os.path.abspath(
          os.path.join(
              os.path.dirname(__file__), "..", "..", "..", ".env"
          )
      )
      load_dotenv(env_config_path)
  
      cls.eng_keyboard_path = os.path.join(
          os.environ.get("PACKAGE_DIR"),
          "res",
          "char",
          "keyboard",
          "en.json",
      )
  
file_path: nlpaug/test/model/char/test_keyboard_model.py
imports: import unittest
  import re
  import os
  from dotenv import load_dotenv
  import nlpaug.model.char
label_desc: Use image node_id 1 for calling the TestKeyboard obj's underlying member method code with example usage: obj.setUpClass(cls) without return types