private async void ServiceOnAuthStateChanged(object sender, BoolEventArgs b) { IsLastfmEnabled = b.Content; IsRecommendationLoading = b.Content; RecommendedArtists = null; if (!b.Content) { return; } var rec = await _service.GetRecommendedArtistsAsync(limit : 10); RecommendedArtists = rec != null?rec.Content.ToList() : new List <LastArtist>(); IsRecommendationLoading = false; }