`LSTM_SeqLabel_True( )`从头到尾没见定义过，咋用？？？？？？？？？？？？？

[nlper01]

elif args.model =='lstm':
    model = LSTM_SeqLabel_True(embeddings['char'],embeddings['bigram'],embeddings['bigram'],args.hidden,
                               len(vocabs['label']),
                          bidirectional=True,device=device,
                          embed_dropout=args.embed_dropout,output_dropout=args.output_dropout,use_bigram=True,
                          debug=args.debug)

LSTM_SeqLabel_True( )从头到尾没见定义过，咋用？？？？？？？？？？？？？