Public MustOverride Sub chargeAmountReservation ( _
	charging As Charging, _
	amount As Decimal, _
	billingText As String, _
	referenceCode As String _
)

public abstract void chargeAmountReservation (
	Charging charging,
	decimal amount,
	string billingText,
	string referenceCode
)

public:
virtual void chargeAmountReservation (
	Charging^ charging, 
	Decimal amount, 
	String^ billingText, 
	String^ referenceCode
) abstract