ActsVolumeMappingTool Node1 ActsVolumeMappingTool - m_magFieldContext - m_geoContext - m_trackingGeometryTool - m_mapper - m_trackingGeometry + initialize() + ActsVolumeMappingTool() + mapper() + mappingState() + trackingGeometryTool() Node2 extends< AthAlgTool, IActsVolumeMappingTool > Node2->Node1