// GET: Maintenance
        public ActionResult Index()
        {
            var userId  = Guid.Parse(User.Identity.GetUserId());
            var service = new MaintenanceService(userId);
            var model   = service.GetMaintenances();

            return(View(model));
        }
        public async Task <ActionResult <IEnumerable <Maintenance> > > GetMaintenances()
        {
            var result = await maintenanceService.GetMaintenances();

            return(result);
        }