CombinedMuonFeature_p4 Node1 CombinedMuonFeature_p4 + m_pt + m_sigma_pt + m_charge + m_flag + CombinedMuonFeature_p4() + ~CombinedMuonFeature_p4() Node2 ElementLink_p3< uint32_t > + m_elementIndex + m_SGKeyHash + ElementLink_p3() Node2->Node1 +m_IDTrack +m_muFastTrack