private function cleanRights(User $user)
    {
        foreach ([
            'DELETE FROM `basusr` WHERE usr_id = :usr_id',
            'DELETE FROM `sbasusr` WHERE usr_id = :usr_id',
        ] as $sql) {
            $stmt = $this->appboxConnection->prepare($sql);
            $stmt->execute([':usr_id' => $user->getId()]);
            $stmt->closeCursor();
        }
    }