code: def label_for_lm(self, **kwargs):
          "A special labelling method for language models."
          self.__class__ = LMTextList
          kwargs['label_cls'] = LMLabelList
          return self.label_const(0, **kwargsf label_for_lm(self, **kwargs):
          "A special labelling method for language models."
          self.__class__ = LMTextList
          kwargs['label_cls'] = LMLabelList
          return self.label_const(0, **kwargs)
docs: A special labelling method for language models.