code: def test_convert_tokens_to_string_format(self):
      # The default common tokenizer tests assumes that the output of `convert_tokens_to_string` is a string which
      # is not the case for Wav2Vec2PhonemeCTCTokenizer.
      tokenizers = self.get_tokenizers(fast=True, do_lower_case=True)
      for tokenizer in tokenizers:
          with self.subTest(f"{tokenizer.__class__.__name__}"):
              tokens = [
                  "ð",
                  "ɪ",
                  "s",
                  "ɪ",
                  "z",
                  "ɐ",
                  "t",
                  "ɛ",
                  "k",
                  "s",
                  "t",
              ]
              output = tokenizer.convert_tokens_to_string(tokens)
  
              self.assertIsInstance(output["text"], str)
  
imports: import json
  import os
  import unittest
  from typing import Tuple
  from transformers import Wav2Vec2PhonemeCTCTokenizer
  from transformers.models.wav2vec2.tokenization_wav2vec2 import VOCAB_FILES_NAMES
  from transformers.models.wav2vec2_phoneme.tokenization_wav2vec2_phoneme import Wav2Vec2PhonemeCTCTokenizerOutput
  from transformers.testing_utils import require_phonemizer
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 27 for calling the Wav2Vec2PhonemeCTCTokenizerTest obj's underlying member method code with example usage: obj.test_convert_tokens_to_string_format() without return types