code: def new_tag(self, label, cfrom=None, cto=None, tagtype=None, **kwargs):
          ''' Create a new tag on this token '''
          if cfrom is None:
              cfrom = self.cfrom
          if cto is None:
              cto = self.cto
          tag = Tag(label=label, cfrom=cfrom, cto=cto, tagtype=tagtype, **kwargs)
          return self.add_tag(tagf new_tag(self, label, cfrom=None, cto=None, tagtype=None, **kwargs):
          ''' Create a new tag on this token '''
          if cfrom is None:
              cfrom = self.cfrom
          if cto is None:
              cto = self.cto
          tag = Tag(label=label, cfrom=cfrom, cto=cto, tagtype=tagtype, **kwargs)
          return self.add_tag(tag)
docs: Create a new tag on this token