at a given message layer, and
 for a particular application context. This method does not return null.</dd>
<dt>Throws:</dt>
<dd><code><a href="../AuthException.html" title="class in jakarta.security.auth.message">AuthException</a></code> - If this provider does not support the assignment of a default CallbackHandler to the
 returned ServerAuthConfig.</dd>
<dd><code><a href="https://docs.oracle.com/en/java/javase/22/docs/api/java.base/java/lang/SecurityException.html" title="class or interface in java.lang"