public bool RemoveOrder(MasterOrder order)
 {
     return _masterOrders.Remove(order);
 }
 public bool RemoveOrder(MasterOrder order)
 {
     return(_masterOrders.Remove(order));
 }
 public bool AddOrder(MasterOrder order)
 {
     _masterOrders.Add(order);
     return true;
 }
 public bool AddOrder(MasterOrder order)
 {
     _masterOrders.Add(order);
     return(true);
 }