ck">Returns the low level Jakarta Authentication handler that the runtime provided when creating this 
 <a href="../../../../../../jakarta/security/enterprise/authentication/mechanism/http/HttpMessageContext.html" title="interface in jakarta.security.enterprise.authentication.mechanism.http"><code>HttpMessageContext</code></a>, and which this context uses to communicate the authentication details to the runtime.
 
 <p>
 <em>Note:</em> This is a low level object that most higher level code would not need to 