T_AthenaRootConverterBase Node1 T_AthenaRootConverterBase # m_streamerChecksum + SetClassNameAndChecksum() + Convert() + ClassName() + StreamerChecksum() + InstantiateOld() + TypeIDOld() + ~T_AthenaRootConverterBase() # T_AthenaRootConverterBase() Node2 std::string Node2->Node1 #m_className Node3 std::basic_string< char > Node3->Node2