 null, it indicates that the provider is to self-register at
 the factory by calling the following method on the factory:
 
 <pre>
 <code>
 public String 
 registerConfigProvider(AuthConfigProvider provider, String layer, String appContext, String description);
 </code>
 </pre></div>
<dl class="notes">
<dt>See Also:</dt>
<dd>
<ul class="tag-list">
<li><a href="ClientAuthContext.html" title="interface in jakarta.security.auth.message.config"><code>ClientAuthContext</code></a></li>
<li><a href="ServerAuthCont