McTrack Node1 McTrack + m_params + m_totalEloss + McTrack() + ~McTrack() + addBremPoint() Node2 std::vector< McBremPoint > Node2->Node1 +m_bremPoints Node3 McBremPoint + m_x + m_y + m_z + m_loss + McBremPoint() + ~McBremPoint() Node3->Node2 +elements