wp-includes/class-wp-http-cookie.php:253string public function getFullHeader() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid return 'Cookie: ' . $this->getHeaderValue(); }Introduced in 2.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-http-cookie.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.