age.internals.log.Cleaner</code> classes to CleanerAppender.
                    </li>
                </ul>
            </li>
            <li><b>Broker</b>
                <ul>
                    <li>
                        The configuration <code>log.cleaner.enable</code> is deprecated. Users should no longer set it to <code>false</code> to prepare for future removal.
                        After the removal, <code>log.cleaner.threads</code> will also have a lower bound of 1.
                        Fo