public function getSystemUserArray()
    {
        $repo = $this->get('sulu_security.user_repository');
        $users = $repo->getUserInSystem();
        $contacts = [];

        foreach ($users as $user) {
            $contact = $user->getContact();
            $contacts[] = array(
                'id' => $contact->getId(),
                'fullName' => $contact->getFullName()
            );
        }
        return $contacts;
    }