public void setPreferredBackupWindow(String preferredBackupWindow) {
        this.preferredBackupWindow = preferredBackupWindow;
    }
<p>
The time range each day during which automated backups are created if automated backups are enabled. For more
information, see <a href=
"https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithAutomatedBackups.html#USER_WorkingWithAutomatedBackups.BackupWindow"
>Backup window</a> in the <i>Amazon RDS User Guide.</i>
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must be in the format <code>hh24:mi-hh24:mi</code>.
</p>
</li>
<li>
<p>
Must be in Universal Coordinated Time (UTC).
</p>
</li>
<li>
<p>
Must not conflict with the preferred maintenance window.
</p>
</li>
<li>
<p>
Must be at least 30 minutes.
</p>
</li>
</ul>

@param preferredBackupWindow
       The time range each day during which automated backups are created if automated backups are enabled. For
       more information, see <a href=
       "https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithAutomatedBackups.html#USER_WorkingWithAutomatedBackups.BackupWindow"
       >Backup window</a> in the <i>Amazon RDS User Guide.</i> </p>
       <p>
       Constraints:
       </p>
       <ul>
       <li>
       <p>
       Must be in the format <code>hh24:mi-hh24:mi</code>.
       </p>
       </li>
       <li>
       <p>
       Must be in Universal Coordinated Time (UTC).
       </p>
       </li>
       <li>
       <p>
       Must not conflict with the preferred maintenance window.
       </p>
       </li>
       <li>
       <p>
       Must be at least 30 minutes.
       </p>
       </li>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/RestoreDBInstanceFromS3Request.java