Geo2G4Builder Node1 Geo2G4Builder - m_detectorName - m_motherTransform - m_treeTops - m_theBuilder - m_matAir - m_pDetStore - m_theExpt + Geo2G4Builder() + ~Geo2G4Builder() + BuildTree() + BuildOpticalSurfaces() + GetVolumeBuilder() + GetDetectorTransform() Node2 AthMessaging - m_nm - m_msg_tls - m_imsg - m_lvl - ATLAS_THREAD_SAFE + AthMessaging() + AthMessaging() + ~AthMessaging() + msgLvl() + msg() + msg() + setLevel() - AthMessaging() - AthMessaging() - operator=() - initMessaging() Node2->Node1