def updateFeatureList(self, lst):
        self._currentList = lst
        val = self._currentFeature.getValue()
        if val in None:
            self._currentList.setFeatureContainer(self._app._allFeatures)
            self._mainSplit.setSecondComponent(self._currentList)
        elif isinstance(val, FeatureSet):
            self._currentList.setFeatureContainer(val.getContainer(True))
            self._mainSplit.setSecondComponent(self._currentList)
        else:
            self._mainSplit.setSecondComponent(self._featureView)
            self._featureView.setFeature(val)
dataset/ETHPy150Open rwl/muntjac/muntjac/demo/sampler/SamplerApplication.py/SamplerWindow.updateFeatureList/operator `is` -> `in`