G4UA::TestAction Node1 G4UA::TestAction + TestAction() + BeginOfRunAction() + EndOfRunAction() + BeginOfEventAction() + EndOfEventAction() + UserSteppingAction() + getReport() Node2 G4UserRunAction Node2->Node1 Node3 G4UserEventAction Node3->Node1 Node4 G4UserSteppingAction Node4->Node1 Node5 G4UA::TestAction::Report + numEvent + numStep + merge() Node5->Node1 -m_report