-- | The last port in the range.
prTo :: Lens' PortRange (Maybe Int)
prTo = lens _prTo (\s a -> s { _prTo = a })
prTo :: Lens' PortRange (Maybe Int)
prTo = lens _prTo (\s a -> s { _prTo = a })
prTo = lens _prTo (\s a -> s { _prTo = a })