removeData in droppable

removeData in droppable


The sourse code of droppable.js contains
destroy: function() {
            var drop = $.ui.ddmanager.droppables;
            for ( var i = 0; i < drop.length; i++ )
                if ( drop[i].item == this )
                    drop.splice(i, 1);
            this.element
                .removeClass("ui-droppable ui-droppable-disabled")
                .removeData("ui-droppable")
                .unbind(".droppable");
},
fireBug error - this.element.removeClass("ui-droppable ui-droppable-
disabled").removeData is not a function
http://blogself.ru/panel/js/ui.droppable.js
Line 70
removeData() is function of jQuery.