protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
RibbonContextualTabGroup tabGroupHeader = element as RibbonContextualTabGroup;
if (tabGroupHeader != null)
{
tabGroupHeader.PrepareTabGroupHeader(item, ItemTemplate, ItemTemplateSelector, ItemStringFormat);
}
}
