code: public T data_getCookies(Integer userId, CharSequence cookieName)
      throws FacebookException, IOException {
      Collection<Pair<String, CharSequence>> params = 
        new ArrayList<Pair<String, CharSequence>>(FacebookMethod.DATA_GET_COOKIES.numParams());
      params.add(new Pair<String,CharSequence>("uid", userId.toString()));
      if (null != cookieName) {
        params.add(new Pair<String,CharSequence>("name", cookieName.toString()));
      }
  
      return this.callMethod(FacebookMethod.DATA_GET_COOKIES, params);
    }
docs: Retrieves all cookies for the application and the given <code>userId</code>.
  If a <code>cookieName</code> is specified, only that cookie will be returned.
  
  @param userId The user from whom to get the cookies (defaults to logged-in user).
  @param cookieName The name of the cookie to get. If null, all cookies
  will be returned
  @return a T of cookies.
  @see <a href="http://wiki.developers.facebook.com/index.php/Data.getCookies">
  Developers Wiki: Data.getCookies</a>
  @see <a href="http://wiki.developers.facebook.com/index.php/Cookies">
  Developers Wiki: Cookies</a>