MuonR4::TruthTrackSeederTool Node1 MuonR4::TruthTrackSeederTool   + initialize() + findTrackSeeds() + estimateStartParameters() Node2 extends< AthAlgTool, ITrackSeedingTool >     Node2->Node1 Node3 SG::ReadHandleKey< DataVector< xAOD::MuonSegment _v1 > > + isDecorHandleKey - m_storeHandle - m_sgKey - m_hashedKey - m_isEventStore - m_owningHandle + ReadHandleKey() + operator=() + assign() + initialize() + initialize() + clid() + key() + empty() + storeHandle() + owningHandle() + isEventStore() + start() + hashedKey() # pythonRepr() - setOwningHandle() - setKey() - updateKey() - parseKey() - updateHandle() Node3->Node1 -m_segmentKey Node39 SG::ReadDecorHandleKey < DataVector< xAOD::MuonSegment _v1 > > + isDecorHandleKey - m_storeHandle - m_sgKey - m_hashedKey - m_isEventStore - m_owningHandle + ReadDecorHandleKey() + operator=() + assign() + clid() + initialize() + contHandleKey() + initialize() + key() + empty() + storeHandle() + owningHandle() + isEventStore() + start() + hashedKey() - pythonRepr() - setOwningHandle() - setKey() - updateKey() - parseKey() - updateHandle() Node3->Node39 Node3->Node39 -m_contHandleKey Node4 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() Node4->Node3 Node4->Node39 -m_contKey Node39->Node1 -m_truthLinkKey Node40 MuonGMR4::MuonDetectorManager - m_secEnvelopes - m_mdtEles - m_tgcEles - m_rpcEles - m_sTgcEles - m_mmEles + MuonDetectorManager() + ~MuonDetectorManager() + getNumTreeTops() + getTreeTop() + addTreeTop() + clearTreeTops() + idHelperSvc() + getAllReadoutElements() + getAllReadoutElements() + getReadoutElement() and 10 more... - linkElements() Node40->Node1 -m_detMgr Node41 GeoVDetectorManager     Node41->Node40 Node42 AthMessaging - m_msg_tls - ATLAS_THREAD_SAFE + AthMessaging() + AthMessaging() + ~AthMessaging() + msgLvl() + msg() + msg() + setLevel() - AthMessaging() - AthMessaging() - operator=() - initMessaging() Node42->Node40 Node45 ServiceHandle< Muon ::IMuonIdHelperSvc >     Node45->Node40 -m_idHelperSvc Node48 ActsTrk::ContextUtility - m_msgPrinter - m_msgLevel + ContextUtility() + initialize() + getGeometryContext() + getCalibrationContext() + getMagneticFieldContext() - msg() - msgLvl() Node48->Node1 -m_ctxProvider