public static function run($args, $extra = [])
    {
        static::$_out = '';
        $argv = explode(' ', "dummy-shell.php {$args}");
        $dispatcher = new WebShellDispatcher($argv);

        ob_start();
        $response = $dispatcher->dispatch($extra);
        static::$_out = ob_get_clean();

        return (int)($response === 0);
    }