omponent that may be nested inside a <a href="../../component/UISelectMany.html" title="class in jakarta.faces.component"><code>UISelectMany</code></a> or <a href="../../component/UISelectOne.html" title="class in jakarta.faces.component"><code>UISelectOne</code></a> component, and causes the addition
 of one or more <a href="../../model/SelectItemGroup.html" title="class in jakarta.faces.model"><code>SelectItemGroup</code></a> of one or more <a href="../../model/SelectItem.html" title="class in jakarta.fac