class WebSocketController {

    @MessageMapping("/clear")
    void clear() {
        // TODO do this in one step (=> new RoutingPlanService)
        locationService.removeAll();
        vehicleService.removeAll();
    }

    @Autowired  WebSocketController(
            RouteListener routeListener,
            RegionService regionService,
            LocationService locationService,
            VehicleService vehicleService,
            DemoService demoService,
            ApplicationEventPublisher eventPublisher);

}