code: public void sessionExpiryTimeSet(ISession session, long old, long newone) {
          // ArrayList sessionStateObservers = null;
  
          /*
           * Check to see if there is a non-empty list of sessionStateObservers.
           */
          if (_sessionStateObservers == null || _sessionStateObservers.size() < 1) {
              return;
          }
  
          // synchronized(_sessionStateObservers) {
          // sessionStateObservers = (ArrayList)_sessionStateObservers.clone();
          // }
  
          ISessionStateObserver sessionStateObserver = null;
          for (int i = 0; i < _sessionStateObservers.size(); i++) {
              sessionStateObserver = (ISessionStateObserver) _sessionStateObservers.get(i);
              sessionStateObserver.sessionExpiryTimeSet(session, old, newone);
          }
      }
docs: Method sessionExpiryTimeSet
  <p>
  
  @see com.ibm.wsspi.session.ISessionStateObserver#sessionExpiryTimeSet(com.ibm.wsspi.session.ISession, long, long)