code: def test_shape(self):
      log_probs = self._get_emissions()
      encoder_out_lens = torch.tensor(
          [15, 14, 13, 12], dtype=torch.int32
      ).cuda()
      decoder = self._get_decoder()
      results = decoder(log_probs, encoder_out_lens)
      self.assertEqual(len(results), log_probs.shape[0])
  
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 5 for calling the CUCTCDecoderTest obj's underlying member method code with example usage: obj.test_shape() without return types