FPGATrackSimClusteringOfflineTool Node1 FPGATrackSimClusteringOfflineTool + FPGATrackSimClusteringOfflineTool() + ~FPGATrackSimClusteringOfflineTool() + DoClustering() Node2 extends< AthAlgTool, FPGATrackSimClusteringToolI > Node2->Node1