code: public void destroy()
      {
          _parameters = null;
          _method = null;
          _uri = null;
          _host = null;
          _hostPort = null;
          _te = null;
          _cookies = null;
          _lastCookies = null;
          _timeStampStr = null;
          _userPrincipal = null;
          _authUser = null;
          _authUser = null;
          if (_attributes != null) _attributes.clear();
          super.destroy();
      }
docs: Destroy the request. Help the garbage collector by null everything that we can.