protected function addBackups(Configuration $configuration, array $laravelPhpbu)
    {
        // walk the the configured backups
        foreach (array_keys($this->types) as $type) {
            foreach ($laravelPhpbu[$type] as $conf) {
                // create and add a phpbu backup config
                $configuration->addBackup($this->translateBackup($type, $conf));
            }
        }
    }