-- | The default root device type. This value is used by default for all instances
-- in the stack, but you can override it when you create an instance. For more
-- information, see <http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ComponentsAMIs.html#storage-for-the-root-device Storage for the Root Device>.
usDefaultRootDeviceType :: Lens' UpdateStack (Maybe RootDeviceType)
usDefaultRootDeviceType =
    lens _usDefaultRootDeviceType (\s a -> s { _usDefaultRootDeviceType = a })
usDefaultRootDeviceType :: Lens' UpdateStack (Maybe RootDeviceType)
usDefaultRootDeviceType =
    lens _usDefaultRootDeviceType (\s a -> s { _usDefaultRootDeviceType = a })
usDefaultRootDeviceType =
    lens _usDefaultRootDeviceType (\s a -> s { _usDefaultRootDeviceType = a })