ActsTrk::IPhaseIIPixelClusteringTool Node1 ActsTrk::IPhaseIIPixelClusteringTool   + DeclareInterfaceID() Node2 ActsTrk::ICellClustering ToolBase< PhaseIIPixelRawData Container, xAOD::PixelClusterContainer, 2 >   + countCells() + clusterize() + createEventDataCache() + makeClusters() Node2->Node1 Node3 IAlgTool     Node3->Node2