ActsTrk::TrackingGeometryTool Node1 ActsTrk::TrackingGeometryTool - m_trackingGeometrySvc - m_rchk - m_detIdMap + initialize() + trackingGeometry() + getGeometryContext() + getNominalGeometryContext() + surfaceIdMap() + getEnvelope() - createDetectorElementToGeo IdMap() Node2 extends< AthAlgTool, ActsTrk::ITrackingGeometry Tool >     Node2->Node1