ActsTrk::MuonBlueprintNodeBuilder Node1 ActsTrk::MuonBlueprintNode Builder - m_detMgr - m_dumpVolumes + initialize() + buildBlueprintNode() - blendChamberMaterial() - getSensitiveElements() - isChamberInTheStation() - buildMuonNode() Node2 extends< AthAlgTool, IBlueprintNodeBuilder > Node2->Node1