docs: public void valueUnbound(HttpSessionBindingEvent event) 
      {
          Utility.getLogger().info("Session Unbound");
          if (this.getMainTask() == null)
              this.free();
          else   // Never - This would mean the session was released before the http response was sent (memory leak)
              Utility.getLogger().severe("Unbound error ServletApplication.valueUnbound");
      }