public static function registerDI(
        string $p_ns,
        \FreeFW\Application\Config $p_config,
        \Psr\Log\LoggerInterface $p_logger
    ) {
        $di = \FreeFW\DI\DependencyInjector::getFactory($p_ns, $p_config, $p_logger);
        self::add($p_ns, $di);
        return $di;
    }