lithium\net\http\Response::$cookies
Cookies to be set in this HTTP response, usually parsed from Set-Cookie headers.
Cookies are stored as arrays of $name => $value where $value is an associative array
or an array of associative arrays which contain at minimum a value key and optionally,
expire, path, domain, secure, and/or httponly keys corresponding to the parameters
of PHP setcookie().
Links
Source
public $cookies = [];