LVL1::IeTowerBuilder Node1 LVL1::IeTowerBuilder + BuildEMBeTowers() + BuildTRANSeTowers() + BuildEMEeTowers() + BuildHECeTowers() + BuildAllTowers() + BuildSingleTower() + init() + execute() + reset() + interfaceID() Node3 LVL1::eTowerBuilder + eTowerBuilder() + ~eTowerBuilder() + init() + execute() + reset() - BuildEMBeTowers() - BuildTRANSeTowers() - BuildEMEeTowers() - BuildHECeTowers() - BuildAllTowers() - BuildSingleTower() Node1->Node3 Node2 IAlgTool Node2->Node1