ref="https://docs.oracle.com/en/java/javase/24/docs/api/java.base/java/util/Optional.html#empty()" title="class or interface in java.util" class="external-link"><code>Optional.empty()</code></a> if the user has not made a selection.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>An <a href="https://docs.oracle.com/en/java/javase/24/docs/api/java.base/java/util/Optional.html" title="class or interface in java.util" class="external-link"><code>Optional</code></a> range of indices that indicates the position o