-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-neptune-dbcluster.html#cfn-neptune-dbcluster-preferredmaintenancewindow
ndbcPreferredMaintenanceWindow :: Lens' NeptuneDBCluster (Maybe (Val Text))
ndbcPreferredMaintenanceWindow = lens _neptuneDBClusterPreferredMaintenanceWindow (\s a -> s { _neptuneDBClusterPreferredMaintenanceWindow = a })
ndbcPreferredMaintenanceWindow :: Lens' NeptuneDBCluster (Maybe (Val Text))
ndbcPreferredMaintenanceWindow = lens _neptuneDBClusterPreferredMaintenanceWindow (\s a -> s { _neptuneDBClusterPreferredMaintenanceWindow = a })
ndbcPreferredMaintenanceWindow = lens _neptuneDBClusterPreferredMaintenanceWindow (\s a -> s { _neptuneDBClusterPreferredMaintenanceWindow = a })