public DBInstance 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 the <code>BackupRetentionPeriod</code>.
</p>

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