LVL1::RecMuonRoiSvc Node1 LVL1::RecMuonRoiSvc + RecMuonRoiSvc() + ~RecMuonRoiSvc() + queryInterface() + initialize() + finalize() + reconstruct() + phi() + eta() + writeRoiRobMap() + interfaceID() Node2 AthService - AthService() - AthService() - operator=() Node2->Node1 Node3 AthCommonMsg< Service > + msg() + msg() + msgLvl() Node3->Node2 Node4 Service Node4->Node3