private function addExportUsers(MutableBag $exportData)
    {
        $repo = $this->em->getRepository(Users::class);
        $users = $repo->findAll();
        $export = [];
        /** @var Entity $user */
        foreach ($users as $user) {
            $export[] = Bag::from($user->toArray())
                ->filter(function ($k) {
                    return \in_array($k, ['id', 'username', 'displayname', 'password', 'email', 'enabled', 'roles']);
                }
            );
        }
        $exportData->set('__users', $export);
    }