void AddObligatoryExtras(OrderDetail orderDetail)
{
var extras = ExtrasService.Travel().GetValueOrDefault(orderDetail.Course_TC);
if (extras != null)
{
var extrasId = extras.Extras_ID;
orderDetail.OrderExtras.Add(new OrderExtras {
Extras_ID = extrasId,
Price = ExtrasService.GetPrice(extrasId)
});
}
}
