code: public GiftCard redeemGiftCard(final String redemptionCode, final String accountCode) {
          final GiftCard.Redemption redemptionData = GiftCard.createRedemption(accountCode);
          final String url = GiftCards.GIFT_CARDS_RESOURCE + "/" + redemptionCode + "/redeem";
  
          return doPOST(url, redemptionData, GiftCard.class);
      }
docs: Redeem a Gift Card
  <p>
  
  @param redemptionCode The redemption code the {@link GiftCard}
  @param accountCode The account code for the {@link Account}
  @return The updated {@link GiftCard} object as identified by the passed in id