docs: @SuppressWarnings("deprecation")
      public void changeTemplateContextManually(final String cookieName, final String value) {
  
          if (value != null) {
              Cookies.setCookie(cookieName, value, new Date(300, 0, 1), null, "/", false);
          } else {
              Cookies.removeCookie(cookieName, "/");
          }
          Window.Location.reload();
      }