t</code></a>
  is <a href="../../../../jakarta/xml/bind/annotation/XmlNsForm.html#QUALIFIED"><code>QUALIFIED</code></a>, then the namespace of
  the enclosing class.

  <li>
  Otherwise "" (which produces unqualified element in the default
  namespace.
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<dl>
<dt>Default:</dt>
<dd>"##default"</dd>
</dl>
</li>
</ul>
</li>
</ul>
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<h4>nillable</h4>
<pre>public abstract&nbsp