Inherit docs from MixedCollection
function(o) {
        var me = this;
        
        o.un({
            scope: me,
            mousedown: me.onMouseDown,
            mouseup: me.onMouseUp,
            mouseover: me.onMouseOver,
            mouseout: me.onMouseOut,
            click: me.onClick
        });
        return me.callParent(arguments);
    }