code: def test_only_match_word(self):
      text = "Dear NLP, text, texttt Thanks. Regards NLPAug"
      reserved_tokens = [["t", "a"]]
  
      aug = naw.ReservedAug(reserved_tokens=reserved_tokens)
      augmented_data = aug.augment(text)
      augmented_text = augmented_data[0]
      self.assertEqual(augmented_text, text)
  
file_path: nlpaug/test/augmenter/word/test_reserved.py
imports: import unittest
  import nlpaug.augmenter.word
label_desc: Use image node_id 2 for calling the TestReserved obj's underlying member method code with example usage: obj.test_only_match_word() without return types