-- | The amount of the recurring charge.
rcAmount :: Lens' RecurringCharge (Maybe Double)
rcAmount = lens _rcAmount (\s a -> s { _rcAmount = a })
rcAmount :: Lens' RecurringCharge (Maybe Double)
rcAmount = lens _rcAmount (\s a -> s { _rcAmount = a })
rcAmount = lens _rcAmount (\s a -> s { _rcAmount = a })