class_docstr: CUDA CTC beam search decoder.
  
  .. devices:: CUDA
  
  Note:
      To build the decoder, please use the factory function :func:`cuda_ctc_decoder`.
code: def __del__(self):
      if cuctc is not None:
          cuctc.prefixCTC_free(self.internal_data)
  
file_path: audio/src/torchaudio/models/decoder/_cuda_ctc_decoder.py
imports: from __future__ import annotations
  import math
  from typing import List, NamedTuple, Union
  import torch
  import torchaudio
  import torchaudio.lib.pybind11_prefixctc
label_desc: Use image node_id 2 for calling the CUCTCDecoder obj's underlying member method code with example usage: obj.__del__() without return types