code: def insert(self, aug, data):
      n = 3
      # test single input
      aug_data = aug.augment(data[0], n=n)
      self.assertEqual(n, len(aug_data))
      self.assertTrue(isinstance(aug_data, pd.DataFrame))
  
      # test multiple inputs
      aug_data = aug.augment(data, n=n)
      self.assertEqual(len(data) * n, len(aug_data))
      self.assertTrue(isinstance(aug_data, pd.DataFrame))
  
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 5 for calling the TestLambadaAug obj's underlying member method code with example usage: obj.insert(aug, data) without return types