public void enableCustomSubscription()
 {
     if (SubscriptionDonation.isNull())
     {
         SubscriptionDonation = new SubscriptionDonation();
     }
     SubscriptionDonation.customEnabled = true;
 }
 public void appendSubscriptionDonation(DonationTier donationTier)
 {
     if (SubscriptionDonation.isNull())
     {
         SubscriptionDonation = new SubscriptionDonation();
     }
     SubscriptionDonation.DonationTiers.Add(donationTier);
 }