Rec::IMuonPrintingTool Node1 Rec::IMuonPrintingTool + print() + print() + interfaceID() Node3 Rec::MuonPrintingTool - m_edmPrinter + MuonPrintingTool() + ~MuonPrintingTool() + initialize() + finalize() + print() + print() - print() Node1->Node3 Node2 IAlgTool Node2->Node1