class_docstr: Test that mutations DO NOT stick with episode.
class_docstr_tok: ["Test","that","mutations","DO","NOT","stick","with","episode","."]
code: def test_not_sticky(self):
      pp = ParlaiParser(True, False)
      opt = pp.parse_kwargs(
          task="integration_tests:multiturn",
          mutators="flatten",
          datatype="train:ordered",
      )
      teacher = create_task_agent_from_taskname(opt)[0]
      first_epoch = []
      second_epoch = []
      for _ in range(teacher.num_examples()):
          first_epoch.append(teacher.act())
      teacher.reset()
      for _ in range(teacher.num_examples()):
          second_epoch.append(teacher.act())
  
      assert all(f == s for f, s in zip(first_epoch, second_epoch))
  
imports: import unittest
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.teachers import create_task_agent_from_taskname
  from parlai.core.message import Message
label_desc: Use image node_id 1 for calling the TestMutatorStickiness obj's underlying member method code with example usage: obj.test_not_sticky() without return types