public string CreateStandingOrder(StandingOrderEntityData requestData) { EnsureRepositoryOpen("CreateStandingOrder"); var standingOrder = new StandingOrderEntityImp(); SetRequestEntityImpData(standingOrder, requestData); _allStandingOrders.Add(standingOrder); _persistenceHandler.SaveChanges(new SavingTask(FilePath, standingOrder.Clone())); return standingOrder.PersistentId; }