public async void LoadAsync()
{
await MovieCatalog.LoadAsync();
await TheaterCatalog.LoadAsync();
await ShowCatalog.LoadAsync();
await TicketCatalog.LoadAsync();
}
public async void LoadModel()
{
// Notifies subscribers that Load is about to start
LoadBegins?.Invoke();
await _movieCatalog.LoadAsync();
await _studioCatalog.LoadAsync();
// Notifies subscribers that Load is about to end
LoadEnds?.Invoke();
}