code: public CsrfToken loadToken(HttpServletRequest request) {
  		CsrfToken token = null;
  		String ident = getIdentifierFromCookie(request);
  		if (ident != null) {
  			String key = ident.concat(parameterName);
  			if (Config.isCacheEnabled()) {
  				token = cache.get(Config.getRootAppIdentifier(), key);
  			} else {
  				Object[] arr = localCache.get(key);
  				if (arr != null && arr.length == 2) {
  					boolean expired = (((Long) arr[1]) + Config.SESSION_TIMEOUT_SEC * 1000) < System.currentTimeMillis();
  					if (expired) {
  						localCache.remove(key);
  					} else {
  						token = (CsrfToken) arr[0];
  					}
  				}
  			}
  		}
  		return token;
  	}
docs: Loads a CSRF token from cache.
  @param request HTTP request
  @return the token