wp-includes/Requests/src/Cookie/Jar.php:56Normalise cookie data into a \WpOrg\Requests\Cookie
$cookiestring|WpOrg\Requests\Cookie$keystringoptional''WpOrg\Requests\Cookie public function normalize_cookie($cookie, $key = '') { if ($cookie instanceof Cookie) { return $cookie; } return Cookie::parse($cookie, $key); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/Requests/src/Cookie/Jar.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.