@SuppressWarnings("unchecked")
        Map<String, StateData> stateMap = (Map<String, StateData>) session.getAttribute(STATES);
        if (stateMap == null) {
            stateMap = new HashMap<>();
            session.setAttribute(STATES, stateMap);
        }
        final StateData stateData = new StateData(nonce, ComponentUtil.getSystemHelper().getCurrentTimeAsLong());