-- | The stack's default Availability Zone, which must be in the specified region.
-- For more information, see <http://docs.aws.amazon.com/general/latest/gr/rande.html Regions and Endpoints>. If you also specify a value
-- for 'DefaultSubnetId', the subnet must be in the same zone. For more
-- information, see 'CreateStack'.
usDefaultAvailabilityZone :: Lens' UpdateStack (Maybe Text)
usDefaultAvailabilityZone =
    lens _usDefaultAvailabilityZone
        (\s a -> s { _usDefaultAvailabilityZone = a })
usDefaultAvailabilityZone :: Lens' UpdateStack (Maybe Text)
usDefaultAvailabilityZone =
    lens _usDefaultAvailabilityZone
        (\s a -> s { _usDefaultAvailabilityZone = a })
usDefaultAvailabilityZone =
    lens _usDefaultAvailabilityZone
        (\s a -> s { _usDefaultAvailabilityZone = a })