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

@return The daily time range during which automated backups are created if automated backups are enabled, as
        determined by the <code>BackupRetentionPeriod</code>.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DBInstance.java