Muon::MDTSimHitCollection_p4 Node1 Muon::MDTSimHitCollection_p4 Node2 std::vector< float > + elements Node2->Node1 +m_driftRadius +m_globalTime +m_stX +m_stY +m_stZ +m_stepLength +m_kineticEnergy +m_energyDeposit Node3 std::vector< int > + elements Node3->Node1 +m_MDTid +m_particleEncoding Node4 std::vector< HepMcParticle Link_p3 > Node4->Node1 +m_partLink Node5 HepMcParticleLink_p3 # m_mcEvtIndex # m_truthSupp + HepMcParticleLink_p3() + HepMcParticleLink_p3() Node5->Node4 +elements Node6 long Node6->Node5 #m_id