code: def score(self, state: CTCDecoderLMState, token_index: int):
      return self.model.score(state, token_index)
  
imports: import torch
  from torchaudio.models.decoder import CTCDecoderLM, CTCDecoderLMState
  from torchaudio.models.decoder._ctc_decoder import _create_word_dict, _Dictionary, _KenLM, _load_words
label_desc: Use image node_id 3 for calling the CustomKenLM obj's underlying member method code with example usage: obj.score(state, token_index) and returns: self