ICaloTopoTowerBuilderToolBase Node1 ICaloTopoTowerBuilderToolBase + ~ICaloTopoTowerBuilderToolBase() + execute() + initialize() + initializeTool() + setTowerSeg() + LoadCalibration() + interfaceID() Node3 CaloTopoTowerBuilderToolBase # m_theTowerSeg + CaloTopoTowerBuilderToolBase() + ~CaloTopoTowerBuilderToolBase() + initialize() + setTowerSeg() Node1->Node3 Node2 IAlgTool Node2->Node1 Node4 CaloTopoTowerBuilderTool # m_caloIndices - m_calo_id + CaloTopoTowerBuilderTool() + ~CaloTopoTowerBuilderTool() + execute() + initializeTool() + handle() + LoadCalibration() - CreateCaloCell2ClusterMap() Node3->Node4