/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;ns,
 <a href="../../../../../jakarta/faces/view/facelets/Tag.html" title="class in jakarta.faces.view.facelets">Tag</a>&nbsp;t)</span></div>
<div class="block"><span class="description-from-type-label">Description copied from interface:&nbsp;<code><a href="TagLibrary.html#containsNamespace(java.lang.String,jakarta.faces.view.facelets.Tag)">TagLibrary</a></code></span></d