     {
         super.partAdded(partName, instance);
         
-        var defaultContent:Array; /*IVisualElement*/
         var group:Group;
         var index:int = -1;
         

    {
        if (titleGroup)
        {
            if (value)
            {
                titleGroup.mxmlContent = value;
            }
            else
            {
                titleGroup.mxmlContent = (titleDisplay is IVisualElement) 
                    ? [titleDisplay] : null;
            }
            
            contentGroupProperties[TITLE_GROUP_PROPERTIES_INDEX] = 
                BitFlagUtil.update(contentGroupProperties[TITLE_GROUP_PROPERTIES_INDEX] as uint,
                    CONTENT_PROPERTY_FLAG, value != null);

                group.mxmlContent = contentGroupProperties[index].content;
                newContentGroupProperties = BitFlagUtil.update(newContentGroupProperties, 
                    CONTENT_PROPERTY_FLAG, true);
            }
            
            if (contentGroupProperties[index].layout !== undefined)
