Sulu\Bundle\ResourceBundle\DependencyInjection\SuluResourceExtension::createOrGetFolder PHP Method

    private function createOrGetFolder($directory, ContainerBuilder $container)
    {
        $filesystem = new Filesystem();
        $directory = $container->getParameterBag()->resolveValue($directory);
        if (!file_exists($directory)) {
            $filesystem->mkdir($directory);
        }
        return $directory;
    }