gistfile1.aw

class Thread extends AbstractService
{
    /**
     * @param ThreadEntity $thread
     */
    public function create(ThreadEntity $thread)
    {
        // I'm in a module, it does not have idea of what the specific application needs... but in my application, I need to add // another specific participant...
        $user = $this->getAuthenticationService()->getIdentity();
        $thread->addParticipant($user);

        $this->getEntityManager()->persist($thread);
        $this->getEntityManager()->flush();
    }
}