e.com/en/java/javase/21/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;key)</span></div>
<div class="block"><p class="changed_added_2_2">
 The default behavior of this method is to call <a href="Flash.html#keep(java.lang.String)"><code>Flash.keep(String)</code></a> on the wrapped <a href="Flash.html" title="class in jakarta.faces.context"><code>Flash</code></a> object.
 </p></div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a 