code: def is_cuda_ctc_decoder_available():
      global _IS_CUDA_CTC_DECODER_AVAILABLE
      if _IS_CUDA_CTC_DECODER_AVAILABLE is None:
          try:
              from torchaudio.models.decoder import (
                  CUCTCDecoder,
              )  # noqa: F401
  
              _IS_CUDA_CTC_DECODER_AVAILABLE = True
          except Exception:
              _IS_CUDA_CTC_DECODER_AVAILABLE = False
      return _IS_CUDA_CTC_DECODER_AVAILABLE
  
imports: import functools
  import os.path
  import shutil
  import subprocess
  import sys
  import tempfile
  import time
  import unittest
  from itertools import zip_longest
  import torch
  import torchaudio
  import torio
  from torch.testing._internal.common_utils import TestCase
  from torchaudio._internal.module_utils import eval_env, is_module_available
  from torchaudio.utils.ffmpeg_utils import get_video_decoders, get_video_encoders
label_desc: Use image node_id 2 for calling a global function with example usage: is_cuda_ctc_decoder_available() and returns: _IS_CUDA_CTC_DECODER_AVAILABLE