ModelScope中Trainers没有text_generation_trainer属性？

ModelScope中按照demo，build_trainer时，Trainers没有text_generation_trainer属性是什么原因呢？kwargs = dict( model='damo/nlp_palm2.0_text-generation_commodity_chinese-base', train_dataset=train_set, eval_dataset=valid_set, work_dir="./result", cfg_modify_fn=cfg_modify_fn,)print(dir(Trainers))trainer = build_trainer(name=Trainers.text_generation_trainer, default_args=kwargs)trainer.train()traceback：trainer = build_trainer(name=Trainers.text_generation_trainer, default_args=kwargs)AttributeError: type object 'Trainers' has no attribute 'text_generation_trainer'