def onTabClose(self, tabsheet, tabContent):
        raise NotImplementedError
Return True if the graph has an edge between nodes u and v.
dataset/ETHPy150Open rwl/muntjac/muntjac/ui/tab_sheet.py/ICloseHandler.onTabClose--crossover with--dataset/ETHPy150Open networkx/networkx/networkx/classes/tests/timingclasses.py/TimingMultiGraph.has_edge