public class SessionServiceBean implements SessionService {

    @PersistenceContext
    EntityManager entityManager;

    @EJB
    SessionService sessionService;

    @Produces
    @Named
    @UserSession
    public Session getUserSession() {
        // для примера упростил
        return new Session(UUID.randomUUID().toString());
    }
}

    @Inject
    @UserSession
    private Session session;

    @Produces
    @Named
    @UserSession
    @SessionScoped
    public Session getUserSession() {
        // для примера упростил
        return new Session(UUID.randomUUID().toString());
    }

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