code: def test_jumanpp_tokenizer_ext(self):
      tokenizer = JumanppTokenizer()
  
      self.assertListEqual(
          tokenizer.tokenize("ありがとうございますm(_ _)ｍ見つけるのが大変です。"),
          ["ありがとう", "ございます", "m(_ _)m", "見つける", "の", "が", "大変です", "。"],
      )
  
imports: import os
  import pickle
  import unittest
  from transformers import AutoTokenizer
  from transformers.models.bert.tokenization_bert import BertTokenizer
  from transformers.models.bert_japanese.tokenization_bert_japanese import VOCAB_FILES_NAMES, BertJapaneseTokenizer, CharacterTokenizer, JumanppTokenizer, MecabTokenizer, SudachiTokenizer, WordpieceTokenizer
  from transformers.testing_utils import custom_tokenizers, require_jumanpp, require_sudachi
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 28 for calling the BertJapaneseTokenizationTest obj's underlying member method code with example usage: obj.test_jumanpp_tokenizer_ext() without return types