code: public void throwException(String errorString) {
          ResourceBundle rb = ResourceBundle.getBundle(LoggingUtil.SESSION_LOGGER_CORE.getResourceBundleName());
          String msg = (String) rb.getObject(errorString);
          RuntimeException re = new RuntimeException(msg);
          throw re;
      }
docs: /*
  Method to throw a runtime Exception. This is used when we are either trying
  to create or access a session
  while the SessionManager is in the process of stopping.