-- | The frequency of the recurring charge.
rcFrequency :: Lens' RecurringCharge (Maybe RecurringChargeFrequency)
rcFrequency = lens _rcFrequency (\s a -> s { _rcFrequency = a })
rcFrequency :: Lens' RecurringCharge (Maybe RecurringChargeFrequency)
rcFrequency = lens _rcFrequency (\s a -> s { _rcFrequency = a })
rcFrequency = lens _rcFrequency (\s a -> s { _rcFrequency = a })