G4UA::AthenaStackingActionTool Node1 G4UA::AthenaStackingActionTool - m_config - m_useDebugAction + AthenaStackingActionTool() + initialize() # makeAndFillAction() Node2 G4UA::UserActionToolBase < AthenaStackingAction > # m_actions + UserActionToolBase() + fillUserAction() # makeAndFillAction() Node2->Node1 Node3 extends< AthAlgTool, IUserActionTool > Node3->Node2