private ParkingAthContext GetContext()
 {
     var context = new ParkingAthContext(true);
     context.ChangeTracker.AutoDetectChangesEnabled = false;
     context.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.NoTracking;
     return context;
 }
 public ParkingAthContext Get()
 {
     return(_context ?? (_context = new ParkingAthContext()));
 }