def _gather_data(self):
        for data in self._collection:
            label = data.label
            label = disambiguate(label, self._data)
            self._data[label] = data
Gathers and returns only variables listed in
dataset/ETHPy150Open glue-viz/glue/glue/dialogs/custom_component/qt/widget.py/CustomComponentWidget._gather_data--crossover with--dataset/ETHPy150Open OpenMDAO/OpenMDAO/openmdao/recorders/recording_manager.py/RecordingManager._gather_vars