Trk::PairOfVxVertexOnJetAxis Node1 Trk::PairOfVxVertexOnJetAxis + PairOfVxVertexOnJetAxis() + PairOfVxVertexOnJetAxis() + ~PairOfVxVertexOnJetAxis() Node2 std::pair< VxVertexOnJet Axis *, VxVertexOnJetAxis * > Node2->Node1