TrigPhoton_p3 Node1 TrigPhoton_p3 + m_roiID + m_allTheFloats + m_valid + TrigPhoton_p3() + ~TrigPhoton_p3() Node2 P4PtEtaPhiM_p1 + m_pt + m_eta + m_phi + m_mass + P4PtEtaPhiM_p1() Node2->Node1 +m_P4PtEtaPhiM Node3 ElementLink_p3< uint32_t > + m_elementIndex + m_SGKeyHash + ElementLink_p3() Node3->Node1 +m_cluster