public WaiterClientModel(/*IWaiterDataAccess waiterDataAccess*/)
 {
     WaiterDataAccess = new WaiterDataAccessWCFServiceClient();
 }
 public WaiterClientModel(/*IWaiterDataAccess waiterDataAccess*/)
 {
     WaiterDataAccess = new WaiterDataAccessWCFServiceClient();
 }