code: def test_PerturbQuestion(self):
      change = transformation.transform(data_sample, n=1)
      trans_sents = change[0].get_text("question")
  
      self.assertTrue(trans_sents != data_sample.get_text("question"))
  
imports: import unittest
  from textflint.input.component.sample import MRCCnSample
  from textflint.generation.transformation.MRCCN import PerturbQuestion
  import random
label_desc: Use image node_id 1 for calling the TestPerturbQuestion obj's underlying member method code with example usage: obj.test_PerturbQuestion() without return types