code: @PostConstruct
      public synchronized void initialize() {
          final FwWebDirection direction = assistWebDirection();
          CookieResourceProvider provider = direction.assistCookieResourceProvider();
          invertibleCipher = provider.provideCipher();
          if (invertibleCipher == null) {
              final String msg = "No assist for the invertible cipher of cookie.";
              throw new FwRequiredAssistNotFoundException(msg);
          }
          // no logging here because cookie manager do it
      }
docs: Initialize this component. <br>
  This is basically called by DI setting file.