Can not access to the hrt of a node?

[jlonghku]

It does not work when I try to access the hydraulic residence time of a node. That might be caused by the name changes of features of NodeResults (hrt). It works after I changed the code in node.py return self._model.getNodeResult(self._nodeid, NodeResults.hrt.value) to return self._model.getNodeResult(self._nodeid, NodeResults.hyd_res_time.value). Is it a suitable way to fix it or any other ways to correct it?