def sphinx_class(self):
        """Property class name formatted for Sphinx doc linking"""
        classdoc = ':class:`{cls} <{pref}.{cls}>`'
        if self.__module__.split('.')[0] == 'properties':
            pref = 'properties'
        else:
            pref = text_type(self.__module__)
        return classdoc.format(cls=self.__class__.__name__, pref=pref)