private async void GetRecommendedListings(int listingId)
        {
            Recommender recommender = new Recommender();
            var         listings    = await recommender.GetSimilarListings(listingId);

            if (listings.Count > 0)
            {
                CvRecommendedListings.IsVisible   = true;
                CvRecommendedListings.ItemsSource = listings;
            }
        }