use CarlosOCarvalho\Flysystem\Cloudinary\CloudinaryAdapter as Adapter;

$config = [
    'api_key' => ':key',
    'api_secret' => ':secret',
    'cloud_name' => ':name',
];

$container = new Adapter($config);

$filesystem = new League\Flysystem\Filesystem( $container );

$filesystem->listContents()