G4UA::AthenaTrackingActionTool Node1 G4UA::AthenaTrackingActionTool - m_secondarySavingLevel - m_subDetVolLevel + AthenaTrackingActionTool() + initialize() # makeAndFillAction() Node2 G4UA::UserActionToolBase < AthenaTrackingAction > # m_actions + UserActionToolBase() + fillUserAction() # makeAndFillAction() Node2->Node1 Node3 extends< AthAlgTool, IUserActionTool > Node3->Node2