In [RFC 6265](https://www.rfc-editor.org/rfc/rfc6265#section-3), it's written that : > Origin servers SHOULD NOT fold multiple Set-Cookie header fields into a single header field. I guess the only way of setting multiple cookie is separating them using a comma yet ? **How to reproduce** ```php use ApiPlatform\OpenApi\Model\Operation; $fooBarOperation = new Operation( // ... responses: [ Response::HTTP_FOUND => [ // ... 'headers' => [ 'Set-Cookie' => [ // ... ], // Here I cannot declare another `Set-Cookie` array key ] ] ] ); ```