code: def setUpClass(cls):
      cls.tokenizer: Speech2TextTokenizer = (
          Speech2TextTokenizer.from_pretrained(cls.checkpoint_name)
      )
      return cls
  
imports: import unittest
  from pathlib import Path
  from shutil import copyfile
  from transformers import SPIECE_UNDERLINE, is_sentencepiece_available
  from transformers.models.speech_to_text import Speech2TextTokenizer
  from transformers.models.speech_to_text.tokenization_speech_to_text import VOCAB_FILES_NAMES, save_json
  from transformers.testing_utils import get_tests_dir, require_sentencepiece, require_tokenizers, slow
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 1 for calling the SpeechToTextTokenizerMultilinguialTest obj's underlying member method code with example usage: obj.setUpClass(cls) and returns: cls