ClusterIdentifier: [required] A unique identifier for the cluster.
DeferMaintenance: A boolean indicating whether to enable the deferred maintenance window.
DeferMaintenanceIdentifier: A unique identifier for the deferred maintenance window.
DeferMaintenanceStartTime: A timestamp indicating the start time for the deferred maintenance window.
DeferMaintenanceEndTime: A timestamp indicating end time for the deferred maintenance window. If you specify an end time, you can't specify a duration.
DeferMaintenanceDuration: An integer indicating the duration of the maintenance window in days. If you specify a duration, you can't specify an end time. The duration must be 45 days or less.