public ArrivalsTableViewController(ArrivalsDataSource dataSource, ITinyMessengerHub messenger)
        {
            _dataSource = dataSource;

            _messenger = messenger;
            _messenger.Subscribe<AirportSelectedMessage>(msg => NavigationItem.Title = string.Format("Arrivals at {0}", msg.Content.Code));
        }
        public ArrivalsTableViewController(ArrivalsDataSource dataSource, ITinyMessengerHub messenger)
        {
            _dataSource = dataSource;

            _messenger = messenger;
            _messenger.Subscribe <AirportSelectedMessage>(msg => NavigationItem.Title = string.Format("Arrivals at {0}", msg.Content.Code));
        }