Trk::PRD_MultiTruthCollection_p3::Entry Node1 Trk::PRD_MultiTruthCollection _p3::Entry + Entry() + Entry() Node2 HepMcParticleLink_p2 # m_mcEvtIndex # m_evtColl + HepMcParticleLink_p2() + HepMcParticleLink_p2() Node2->Node1 +particle Node3 long Node3->Node1 +id Node3->Node2 #m_barcode