Neos\Flow\Http\Headers::setCookie PHP Method

    public function setCookie(Cookie $cookie)
    {
        $this->cookies[$cookie->getName()] = $cookie;
    }

 /**
  * Sets the given cookie to in the headers of this message.
  *
  * This is a shortcut for $message->getHeaders()->setCookie($cookie);
  *
  * @param Cookie $cookie The cookie to set
  * @return void
  * @api
  */
 public function setCookie(Cookie $cookie)
 {
     $this->headers->setCookie($cookie);
 }