n</code></a>, can be of any of the following types:
 </p>
 <ul>
 <li><em>Single instance of <a href="../model/SelectItem.html" title="class in jakarta.faces.model"><code>SelectItem</code></a></em> - This instance is added to the set of available options for the
 parent tag.</li>
 <li><em>Array of <a href="../model/SelectItem.html" title="class in jakarta.faces.model"><code>SelectItem</code></a></em> - This set of instances is added to the set of available options for the
 parent component, in ascending subs