def closeEvent(self, event):
        self.tabController.mergeTab(self, self.tabController.count())
        event.accept()
decode a slice object as sent to __getitem__.
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/packages/spreadsheet/spreadsheet_tab.py/StandardTabDockWidget.closeEvent--crossover with--dataset/ETHPy150Open ralfonso/theory/theory/model/mpdutil.py/decode_slice