public void RemoveFromOrders(Order value)
 {
     if (_Orders.Contains(value))
     {
         _Orders.Remove(value);
     }
 }
 public void AddToOrders(Order value)
 {
     if (!(_Orders.Contains(value)))
     {
         _Orders.Add(value);
     }
 }
 public IList<Order> ChoicesRemoveFromOrders(Order value)
 {
     return _Orders.ToList();
 }