public static Context createRootContext(EntityManager manager)
	{
		Context root = new Context();
		
		root.addService(new EmployeeService("EmployeeService", manager));
		root.addService(new DepartmentService("DepartmentService", manager));
		root.addService(new ParkingSpaceService("ParkingSpaceService", manager));
		root.addService(new ProjectService("ProjectService", manager));
		root.addService(new PhoneService("PhoneService", manager));
		root.addService(new CompanyService("CompanyService", manager));
		root.addService(new SickEntryService("SickEntryService", manager));
		root.addService(new DemoDataGenerationService("DemoDataGenerationService", manager));
		root.addService(new SocketRuleService("SocketRuleService", manager));
		root.addService(new SeatInfoService("SeatInfoService", manager));
		root.addService(new EmployeeHistoryService("EmployeeHistoryService", manager));
		root.addService(new WorkerService("WorkerService", manager));
		
		return root;
	}