AFatrasG4Tool Node1 AFatrasG4Tool - m_ActsFatrasG4Tool + FastSimulationBase() # initializeFastSim() # BeginOfAthenaEvent() # EndOfAthenaEvent() # makeFastSimModel() Node2 FastSimulationBase # m_regionName # m_noRegions + FastSimulationBase() + initializeFastSim() + BeginOfAthenaEvent() + EndOfAthenaEvent() # getRegion() Node2->Node1 Node3 extends< AthAlgTool, IFastSimulation >     Node3->Node2 Node4 SG::WriteHandleKey < AtlasHitsVector< SiHit > > + isDecorHandleKey - m_storeHandle - m_sgKey - m_hashedKey - m_isEventStore - m_owningHandle + WriteHandleKey() + operator=() + assign() + initialize() + initialize() + clid() + key() + empty() + storeHandle() + owningHandle() + isEventStore() + start() + hashedKey() # pythonRepr() - setOwningHandle() - setKey() - updateKey() - parseKey() - updateHandle() Node4->Node1 -m_pixelHitsKey -m_sctHitsKey Node5 SG::VarHandleKey + isDecorHandleKey - m_hashedKey - m_isEventStore + VarHandleKey() + operator=() + assign() + initialize() + initialize() + clid() + key() + empty() + storeHandle() + owningHandle() + isEventStore() + start() + hashedKey() # pythonRepr() - setOwningHandle() - setKey() - updateKey() - parseKey() - updateHandle() Node5->Node4 Node10 SG::VarHandleBase # m_ptr # m_storeWasSet + VarHandleBase() + VarHandleBase() + VarHandleBase() + VarHandleBase() + VarHandleBase() + VarHandleBase() + operator=() + operator=() + ~VarHandleBase() + key() and 20 more... # setState() # setState() # record_impl() # put_impl() # typeless_dataPointer _impl() # typeless_dataPointer() # typeless_cptr() # typeless_ptr() # get_impl() # symLink_impl() # isPresent_impl() - storeFromHandle() - setStoreFromHandle() - resetProxy() - setProxy() - typeless_dataPointer _fromProxy() Node5->Node10 -m_key Node6 Gaudi::DataHandle     Node6->Node5 Node7 ServiceHandle< IProxyDict >     Node7->Node5 -m_storeHandle Node8 std::string     Node8->Node5 -m_sgKey Node9 std::basic_string< Char >     Node9->Node8 Node10->Node5 -m_owningHandle