Graphical Class Hierarchy Node0 Trk::ObjectCounter < Trk::VxCandidate > Node1 Trk::VxCandidate Node0->Node1 Node2 Trk::ExtendedVxCandidate Node1->Node2 Node4 Trk::MVFVxCandidate Node1->Node4 Node5 Trk::VxJetCandidate Node1->Node5 Node3 Trk::V0Hypothesis Node2->Node3