Csv enclosure have no effect when used programatically

Hi I use csv serialization programtically.
For example with this code :

use Drupal\csv_serialization\Encoder\CsvEncoder;
use Symfony\Component\Serializer\Serializer;
$encoders = [new CsvEncoder(',', '""', '\\')];
$serializer = new Serializer([], $encoders);
$row_csv= $serializer->serialize([['test',1,'2012-02']], 'csv') . PHP_EOL;
kint($row_csv);

I can see that there are no encolsure on each field.

also I don't understand why it'is required (throw an exception) if you dont wann enclosure, related to https://www.drupal.org/project/csv_serialization/issues/2936843 💬 How to have no enclosure? Fixed