def super_categories(self):
        """
        EXAMPLES::

            sage: UniqueFactorizationDomains().super_categories()
            [Category of gcd domains]
        """
        return [GcdDomains()]
    def super_categories(self):
        """
        EXAMPLES::

            sage: UniqueFactorizationDomains().super_categories()
            [Category of gcd domains]
        """
        from sage.categories.gcd_domains import GcdDomains
        return [GcdDomains()]