code: def incorrect_label(self, aug, data):
      n = 1
      # single incorrect label
      incorrect_label = "incorrect_label"
      with self.assertRaises(Exception) as error:
          aug.augment(incorrect_label, n=n)
      self.assertTrue(
          "does not exist. Possible" in str(error.exception)
      )
  
      # multi incorrect labels
      incorrect_labels = ["incorrect_label1", "incorrect_label2"]
      with self.assertRaises(Exception) as error:
          aug.augment(incorrect_labels, n=n)
      self.assertTrue(
          "does not exist. Possible" in str(error.exception)
      )
  
      # mix correct label and incorrect label
      with self.assertRaises(Exception) as error:
          aug.augment(data + incorrect_labels, n=n)
      self.assertTrue(
          "does not exist. Possible" in str(error.exception)
      )
  
file_path: nlpaug/test/augmenter/sentence/test_lambada.py
imports: import unittest
  import os
  import torch
  import pandas
  from dotenv import load_dotenv
  import nlpaug.augmenter.sentence
label_desc: Use image node_id 6 for calling the TestLambadaAug obj's underlying member method code with example usage: obj.incorrect_label(aug, data) without return types