code: def test_vocab_size(self):
      self.assertEqual(self.get_tokenizer().vocab_size, 79)
  
imports: import unittest
  from transformers import SPIECE_UNDERLINE
  from transformers.models.speecht5 import SpeechT5Tokenizer
  from transformers.testing_utils import get_tests_dir, require_sentencepiece, require_tokenizers, slow
  from transformers.tokenization_utils import AddedToken
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 8 for calling the SpeechT5TokenizerTest obj's underlying member method code with example usage: obj.test_vocab_size() without return types