code: def insert(self, aug, data):
      self.assertLess(0, len(data))
      augmented_data = aug.augment(data)
  
      if isinstance(data, list):
          for d, a in zip(data, augmented_data):
              self.assertNotEqual(d, a)
              self.assertTrue(aug.model.get_subword_prefix() not in a)
      else:
          augmented_text = augmented_data[0]
          self.assertNotEqual(data, augmented_text)
          self.assertTrue(
              aug.model.get_subword_prefix() not in augmented_text
          )
  
imports: import unittest
  import os
  from dotenv import load_dotenv
  import torch
  import nlpaug.augmenter.word
  import nlpaug.model.lang_models
label_desc: Use image node_id 14 for calling the TestContextualWordEmbsAug obj's underlying member method code with example usage: obj.insert(aug, data) without return types