code: def merge_into_group(self, group):
          
          super(VerboseMixin, self).merge_into_group(group)
          group.verbose_name = self.verbose_name
          group.help_text = self.help_text
docs: Redefines :meth:`~candv.base.Constant.merge_into_group` and adds
          ``verbose_name`` and ``help_text`` attributes to the target group.