Redefines :meth:`~candv.base.Constant.merge_into_group` and adds
        ``verbose_name`` and ``help_text`` attributes to the target group.

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