/// <summary>
/// Replaces an existing gift card with a new one,
/// transferring the balance from the old card to
// the new card in the process.
/// </summary>
/// <param name="newCard">The replacement gift card</param>
/// <returns>AuthorizationBuilder</returns>
public AuthorizationBuilder ReplaceWith(GiftCard newCard)
{
return(new AuthorizationBuilder(TransactionType.Replace, this).WithReplacementCard(newCard));
}