public override async ValueTask Initialize(ILifetimeScope scope)
{
// migerate db
await scope.MigrateDbContext <BeatmapDownloaderDatabaseContext>();
// subscribe events
scope.Subscription <MultiplayerBeatmapIdInfo, MultiplayerDownloadService>();
scope.Subscription <BeatmapDownloadAddressPrepared, BeatmapDownloadService>();
scope.Subscription <OsuProcessMatchedEvent, BeatmapDownloadService>();
// add download provider options to UI
await scope.AddDownloadProviderUIOptions <SayobotDownloadProvider>();
await scope.AddDownloadProviderUIOptions <BloodcatDownloadProvider>();
}