void ChangeDestinationButton_Clicked(object sender, EventArgs e)
 {
     Source = _joinedTrips.JoinedTrips.SingleOrDefault(x => !x.DestinationStopName.Equals(Source.DestinationStopName));
     FirstStopNameLabel.Text         = Source.FirstStopName;
     DestinationStopNameLabel.Text   = Source.DestinationStopName;
     JoinedTripsListView.ItemsSource = Source.Stops;
 }
        protected override async void OnAppearing()
        {
            base.OnAppearing();

            JoinedTripsGrid.BindingContext = _joinedTrips;
            Source = _joinedTrips.JoinedTrips.FirstOrDefault();
            FirstStopNameLabel.Text         = Source.FirstStopName;
            DestinationStopNameLabel.Text   = Source.DestinationStopName;
            JoinedTripsListView.ItemsSource = Source.Stops;

            _minuteTimeTableList = await _timeTableService.GetMinuteTimeTables(Source.BusLineName);
        }