public void AddItemToBill(string sessionID, FoodOrder order)
 {
     if (Auth.VerifySession(sessionID, "waiter"))
     {
         Guid id = getWorkflowIdFromTable(order.DeleverToTable);
         WorkflowInterface.WorkflowInterface.CustomerWF.RaiseAddFoodOrderToBill(
             new WorkflowLocalService.FoodOrderEventArgs(id,
                 order));
         ManualWorkflowSchedulerService manualScheduler = AppDomain.CurrentDomain.GetData("ManualScheduler") as ManualWorkflowSchedulerService;
         manualScheduler.RunWorkflow(id);
     }
     else
     {
         throwSessionExp(sessionID);
     }
 }
 public void MarkOrder(int orderNumber, FoodOrder.OrderStatusList status)
 {
     throw new NotImplementedException();
 }