Neos\Flow\Http\AbstractMessage::getCookie PHP Метод

This is a shortcut for $message->getHeaders()->getCookie($name);

public getCookie ( string $name ) : Cookie
$name	string	Name of the cookie
Результат	Cookie	The cookie or NULL if no such cookie exists

    public function getCookie($name)
    {
        return $this->headers->getCookie($name);
    }

AbstractMessage