code: def test_normalize_reply_version2(self):
      assert (
          string_utils.normalize_reply("Add a period", 2)
          == "Add a period."
      )
      assert (
          string_utils.normalize_reply("Add a period?", 2)
          == "Add a period?"
      )
      assert (
          string_utils.normalize_reply("Add a period!", 2)
          == "Add a period!"
      )
      assert (
          string_utils.normalize_reply('"Add a period"', 2)
          == '"add a period"'
      )
  
imports: from parlai.core.opt import Opt
  from parlai.utils.misc import Timer, round_sigfigs, set_namedtuple_defaults, nice_report
  import parlai.utils.strings
  from copy import deepcopy
  import random
  import time
  import unittest
  from parlai.utils.data import DatatypeHelper
  from parlai.utils.curated_response import generate_init_prompot, generate_safe_response
label_desc: Use image node_id 2 for calling the TestStrings obj's underlying member method code with example usage: obj.test_normalize_reply_version2() without return types