D3PD::RootReaderD3PDSvc Node1 D3PD::RootReaderD3PDSvc - m_d3pds - m_version + RootReaderD3PDSvc() + initialize() + finalize() + make() + queryInterface() Node2 AthService - AthService() - AthService() - operator=() Node2->Node1 Node3 AthCommonMsg< Service > + msg() + msg() + msgLvl() Node3->Node2 Node4 Service Node4->Node3 Node5 D3PD::ID3PDSvc + DeclareInterfaceID() + make() - operator=() - operator=() Node5->Node1 Node6 IService Node6->Node5