ICaloCluster_OnTrackBuilder Node1 ICaloCluster_OnTrackBuilder + ~ICaloCluster_OnTrackBuilder() + buildClusterOnTrack() + interfaceID() Node3 CaloCluster_OnTrackBuilder - m_calosurf - m_caloMgrKey - m_useClusterEnergy - m_useClusterPhi - m_useClusterEta - m_eg_resol + CaloCluster_OnTrackBuilder() + CaloCluster_OnTrackBuilder() + ~CaloCluster_OnTrackBuilder() + initialize() + finalize() + buildClusterOnTrack() - getCaloSurface() - getClusterLocalParameters() - getClusterErrorMatrix() Node1->Node3 Node2 IAlgTool Node2->Node1