public static void CreateFrom(IGroup result, List <IItemProperties> stamps)
{
List <IItemProperties> sortedStamps = stamps.OrderBy(x => x.ZOrder).ToList();
for (int i = 0; i < sortedStamps.Count; i++)
{
sortedStamps[i].ZOrder = i + 1;
}
result.Children = sortedStamps;
result.CalculateSizeAndPosition();
PositionContainedStampsRelativeToCenter(result);
}