public Cluster withPreferredBackupWindow(String preferredBackupWindow) {
        setPreferredBackupWindow(preferredBackupWindow);
        return this;
    }
<p>
The daily time range during which automated backups are created if automated backups are enabled, as determined
by <code>backupRetentionPeriod</code>.
</p>

@param preferredBackupWindow
       The daily time range during which automated backups are created if automated backups are enabled, as
       determined by <code>backupRetentionPeriod</code>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-docdbelastic/src/main/java/com/amazonaws/services/docdbelastic/model/Cluster.java