code: public String getActualSSLSessionId(ServletRequest request) {
          String sessionID = null;
          byte[] sslBytes = ((IExtendedRequest) request).getSSLId();
          if (sslBytes != null) {
              sessionID = SessionIDGeneratorImpl.convertSessionIdBytesToSessionId(sslBytes, SessionManagerConfig.getSessionIDLength());
          }
          return sessionID;
      }
docs: /*
  Method used to get at the SSL Id rather than the displayed Id