FastSimulationBase Node1 FastSimulationBase # m_regionNames # m_noRegions - m_FastSimModel + FastSimulationBase() + ~FastSimulationBase() + initializeFastSim() + BeginOfAthenaEvent() + EndOfAthenaEvent() # getFastSimModel() - setFastSimModel() - deleteFastSimModel() Node2 extends< AthAlgTool, IFastSimulation > Node2->Node1