IPhysicsContructor Node1 IPhysicsContructor   + IPhysicsContructor() Node2 G4VPhysicsConstructor     Node2->Node1 Node3 AthMessaging - m_msg_tls - ATLAS_THREAD_SAFE + AthMessaging() + AthMessaging() + ~AthMessaging() + msgLvl() + msg() + msg() + setLevel() - AthMessaging() - AthMessaging() - operator=() - initMessaging() Node3->Node1 Node4 std::string     Node4->Node3 -m_nm Node5 std::basic_string< Char >     Node5->Node4 Node6 std::atomic< IMessageSvc * > + ptr   Node6->Node3 -m_imsg Node7 std::atomic< MSG::Level > + ptr   Node7->Node3 -m_lvl