public void Deconstruct(
     out IAmazonSimpleNotificationService snsClient,
     out NotifyDatabaseAvailabilityHandler handler
     )
 {
     snsClient = SnsClient;
     handler   = StartDatabaseHandler;
 }
#pragma warning restore CS8618, CS0649

            public Task Setup()
            {
                StartDatabaseHandler = new NotifyDatabaseAvailabilityHandler(SnsClient);
                return(Task.CompletedTask);
            }