current
 checkpoint data for this reader. It is
 called before a chunk checkpoint is committed.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>checkpoint data</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Exception.html?is-external=true" title="class or interface in java.lang" class="externalLink">Exception</a></code> - is thrown for any errors.</dd>
</dl>
</li>
</ul>
</li>
</ul>
</section>
