/**
  * Execute the "addCar" operation synchronously
  *
  * @return The result of this operation
  */
 public synchronized CarTypPrx addCar(Car car, UserTypPrx usr) {
   _queryController.destroy();
   DBProcedureController queryController;
   _queryController =
       queryController = new DBProcedureController(_handler, _session.getCardroidManager());
   return queryController.addCar(car, usr);
 }
 /**
  * Execute the "addCar" operation asynchronously
  *
  * @param listener Implementation of the callback methods that will be called upon the completion
  *     of the operation
  * @return QueryController containing the context of this operation
  */
 public synchronized DBProcedureController addCar(
     QueryListener listener, Car car, UserTypPrx usr) {
   _queryController.destroy();
   DBProcedureController queryController;
   _queryController =
       queryController = new DBProcedureController(_handler, _session.getCardroidManager());
   queryController.addCar(listener, car, usr);
   return queryController;
 }