private void EnableBeginGroup(ChoiceActionItemCollection items, IModelNavigationItems itemsModel)
{
foreach (ChoiceActionItem item in items)
{
IModelNavigationItem itemModel = itemsModel != null?itemsModel.GetNode(item.Id) as IModelNavigationItem : null;
item.BeginGroup = itemModel != null ? ((IModelNavigationItemSeparator)itemModel).BeginGroup : false;
EnableBeginGroup(item.Items, itemModel != null ? itemModel.GetNode("Items") as IModelNavigationItems : null);
}
}
