ActsTrk::TrackingGeometryTool Node1 ActsTrk::TrackingGeometryTool   + initialize() + trackingGeometry() + getGeometryContext() + getNominalGeometryContext() + surfaceIdMap() + getEnvelope() - createDetectorElementToGeo IdMap() Node2 extends< AthAlgTool, ActsTrk::ITrackingGeometry Tool >     Node2->Node1 Node3 ServiceHandle< ActsTrk ::ITrackingGeometrySvc >     Node3->Node1 -m_trackingGeometrySvc Node4 SG::ReadHandleKey< GeometryContext > + isDecorHandleKey - m_storeHandle - m_sgKey - m_hashedKey - m_isEventStore - m_owningHandle + ReadHandleKey() + ReadHandleKey() + operator=() + assign() + initialize() + initialize() + clid() + key() + empty() + storeHandle() + owningHandle() + isEventStore() + start() + hashedKey() # ReadHandleKey() # ReadHandleKey() # pythonRepr() - setOwningHandle() - setKey() - updateKey() - parseKey() - updateHandle() Node4->Node1 -m_rchk 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 Node6 Gaudi::DataHandle     Node6->Node5 Node7 ServiceHandle< IProxyDict >     Node7->Node5 -m_storeHandle Node8 std::string     Node8->Node5 -m_sgKey Node40 std::unique_ptr< const ActsTrk::DetectorElementToActs GeometryIdMap >   + operator->() Node40->Node1 -m_detIdMap Node41 ActsTrk::DetectorElement ToActsGeometryIdMap   + makeValue() + getValue() Node41->Node40 +ptr