public static function importArray(array $data, $format = 'atom')
    {
        $obj = 'Zend_Feed_' . ucfirst(strtolower($format));
        /**
         * @see Zend_Loader
         */
        require_once 'Zend/Loader.php';
        Zend_Loader::loadClass($obj);
        /**
         * @see Zend_Feed_Builder
         */
        require_once 'Zend/Feed/Builder.php';
        return new $obj(null, null, new Zend_Feed_Builder($data));
    }