G4UA::AthenaStackingAction Node1 G4UA::AthenaStackingAction # m_config # m_oneOverWeightNeutron # m_oneOverWeightPhoton + AthenaStackingAction() + ClassifyNewTrack() # isNeutrino() # isGamma() # isNeutron() # getPrimaryParticleInformation() Node3 G4UA::AthenaDebugStacking Action + AthenaDebugStackingAction() + ClassifyNewTrack() Node1->Node3 Node2 G4UserStackingAction Node2->Node1