How to get the subject in version 2.6?

[kpalania]

import org.jboss.portal.security.SubjectAssociation;
 import org.jboss.portal.security.PortalSubject;

 PortalSubject subject = SubjectAssociation.getSubject();

What is the equivalent of this in JBoss Portal 2.6?

[kpalania]

I guess I could do something like this:

 Subject subject = (Subject) PolicyContext
 .getContext("javax.security.auth.Subject.container");

But, how can I set this? Essentially, I want to set this to the new subject (with the additional principals) so that when the JBoss Portal JACC* APIs do a call like the above, they get the updated/modified subject.