code: def test_decoder_from_pretrained(model, expected, emissions):
      from torchaudio.models.decoder import (
          ctc_decoder,
          download_pretrained_files,
      )
  
      pretrained_files = download_pretrained_files(model)
      decoder = ctc_decoder(
          lexicon=pretrained_files.lexicon,
          tokens=pretrained_files.tokens,
          lm=pretrained_files.lm,
      )
      result = decoder(emissions)
      assert result[0][0].words == expected
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_decoder_from_pretrained(model, expected, emissions) without return types