code: def _get_decoder(self, tokens=None, **kwargs):
      from torchaudio.models.decoder import cuda_ctc_decoder
  
      if tokens is None:
          tokens = get_asset_path("decoder/tokens.txt")
  
      return cuda_ctc_decoder(
          tokens=tokens,
          beam_size=5,
          **kwargs,
      )
  
file_path: audio/test/torchaudio_unittest/models/decoder/cuda_ctc_decoder_test.py
imports: import torch
  from torchaudio_unittest.common_utils import get_asset_path, skipIfNoCuCtcDecoder, skipIfNoCuda, TempDirMixin, TorchaudioTestCase
label_desc: Use image node_id 1 for calling the CUCTCDecoderTest obj's underlying member method code with example usage: obj._get_decoder(tokens) and returns: cuda_ctc_decoder