FPGATrackSimGNNGraphHitSelectorTool Node1 FPGATrackSimGNNGraphHitSelectorTool   + FPGATrackSimGNNGraphHitSelector Tool() + selectHits() - getEta() Node2 AthAlgTool   + AthAlgTool() + ~AthAlgTool() - AthAlgTool() - AthAlgTool() - operator=() Node2->Node1 Node3 AthCommonDataStore < AthCommonMsg< AlgTool > > - m_varHandleArraysDeclared + AthCommonDataStore() + evtStore() + detStore() + sysInitialize() + sysStart() + inputHandles() + outputHandles() + declareProperty() + updateVHKA() # renounceArray() # renounce() # extraDeps_update_handler() - declareGaudiProperty() Node3->Node2 Node4 AthCommonMsg< AlgTool >   + msg() + msgLvl() Node4->Node3 Node5 AlgTool     Node5->Node4 Node6 ServiceHandle< StoreGate Svc >     Node6->Node3 -m_detStore -m_evtStore Node7 std::vector< SG::VarHandle KeyArray * >     Node7->Node3 -m_vhka Node8 SG::VarHandleKeyArray   + VarHandleKeyArray() + ~VarHandleKeyArray() + assign() + push_back() + toString() + mode() + keys() + renounce() + renounced() + declare() + setOwner() + owner() + owner() Node8->Node7 +elements