TrigL2MuonSA::AlignmentBarrelLUTSvc Node1 TrigL2MuonSA::AlignmentBarrel LUTSvc - m_lut_fileName - m_alignmentBarrelLUT + AlignmentBarrelLUTSvc() + initialize() + alignmentBarrelLUT() Node2 AthService - AthService() - AthService() - operator=() Node2->Node1 Node3 AthCommonMsg< Service > + msg() + msg() + msgLvl() Node3->Node2 Node4 Service Node4->Node3