Graphical Class Hierarchy Node0 TrackHandleBase Node1 TrackHandle_SimulationTrack Node0->Node1 Node2 TrackHandle_TrackContainer Node0->Node2 Node3 TrackHandle_TrackParticle Node0->Node3 Node4 TrackHandle_TrkSegment Node0->Node4 Node5 TrackHandle_TrkTrack Node0->Node5 Node6 TrackHandle_TruthTrack Node0->Node6 Node7 TrackHandle_xAODTrackParticle Node0->Node7