private async void OnLoad()
        {
            try
            {
                showtimesListView.IsRefreshing = true;
                var showtimes = await Service.GetShowtimes(Cinema.Id, Movie.Id);

                var data = showtimes.ToArray();

                Array.Sort(data, new ShowtimeComparer());

                ShowtimesList = new ObservableCollection <Showtime>(data);

                showtimesListView.ItemsSource = ShowtimesList;
            }
            catch (Exception E)
            {
                await DisplayAlert("Error", $"{E} - {E.Message}", "Exit");

                AppControls.CloseApp();
            }
            finally
            {
                showtimesListView.IsRefreshing = false;
            }
        }