public PreAuthorization(
			string authKey, 
			HMerchant merchantHeader, 
			HCreditCardPayment cardPaymentHeader,
			HUser userHeader)
            : base(authKey, merchantHeader, cardPaymentHeader, userHeader)
        {
        }
        public FinancialTransaction(
			string authKey, 
			HMerchant merchantHeader, 
			HCreditCardPayment cardPaymentHeader,
			HUser userHeader)
            : base(authKey, merchantHeader)
        {
            this.CardPaymentHeader = cardPaymentHeader;
            this.UserHeader = userHeader;
        }