code: private static Response make(final CharSequence msg, final Level level,
          final String cookie, final Expires.Date expires)
          throws UnsupportedEncodingException {
          return new RsWithCookie(
              cookie,
              new Sprintf(
                  RsFlash.TEXT_FORMAT,
                  URLEncoder.encode(
                      msg.toString(),
                      Charset.defaultCharset().name()
                  ),
                  level.getName()
              ),
              "Path=/",
              expires.print()
          );
      }
docs: Make a response.
  @param msg Message
  @param level Level
  @param cookie Cookie name
  @param expires Date of the cookie
  @return Response
  @throws UnsupportedEncodingException In case the default encoding is not
  supported
  @checkstyle ParameterNumberCheck (5 lines)