public void updateCookieStore(Map<String, List<Cookie>> cookies) {
        if (cookies == null) {
            throw new NullPointerException("Cookies argument can not be null");
        }
        for (List<Cookie> listOfCookies : cookies.values()) {
            for(Cookie cookie: listOfCookies) {
                cookieStore.addCookie(cookie);
            }
        }
    }
Update cookie store with a map of cookies.
 - key: domain name
 - value: List of cookies associated with that domain name
@param cookies the cookies to be stored
@throws NullPointerException if the cookies argument is null
ache/src/main/java/achecrawler/crawler/async/fetcher/ConcurrentCookieStoreProvider.java