code: public boolean renew(String value, String state, long time) {
          Nonce nonce = _map.get(state + ':' + value);
          if (nonce != null && !nonce.hasExpired()) {
              nonce.renew(time > 0 ? time : TTL);
              return true;
          } else {
              return false;
          }
      }
docs: Renews a nonce. The nonce must be valid and must have not expired.