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

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

        return $contacts;
    }