private void SetBundleClips(Purchase[] userPurchases, CheckoutViewModel model, IMyMentorRepository repository)
 {
     var bundleIds = userPurchases.Where(x => x.BundleKey != null).Select(x => x.BundleKey.ObjectId).ToArray();
     model.LessonsForBundles = repository.FindClipsForBundle(bundleIds);
 }