*
* @method updateTooltipAccessKeys_getAccessKeyPrefix
* @deprecated since 1.27 Use #getAccessKeyModifiers
+ * @param {Object} [ua] An object with a 'userAgent' and 'platform' property.
+ * @return {string}
*/
$.fn.updateTooltipAccessKeys.getAccessKeyPrefix = function ( ua ) {
return getAccessKeyModifiers( ua ).join( '-' ) + '-';