final String sessionId = urlQueue.getSessionId();
        if (super.exists(sessionId, url)) {
            return true;
        }

        final AccessResult<String> accessResult = dataService.getAccessResult(sessionId, url);
        return accessResult != null;
    }

    @Override
    protected boolean exists(final String sessionId, final String url) {
        final boolean ret = super.exists(sessionId, url);