def fireCollapseEvent(self, itemId):
        event = CollapseEvent(self, itemId)
        self.fireEvent(event)
No design from a GenSource.
dataset/ETHPy150Open rwl/muntjac/muntjac/ui/tree.py/Tree.fireCollapseEvent--crossover with--dataset/ETHPy150Open membase/membase-cli/pump_gen.py/GenSource.provide_design