ITrigL2LayerNumberTool Node1 ITrigL2LayerNumberTool + maxSiliconLayerNum() + offsetEndcapPixels() + offsetBarrelSCT() + offsetEndcapSCT() + report() + maxNumberOfUniqueLayers() + pixelLayers() + sctLayers() + layerGeometry() + interfaceID() Node2 IAlgTool Node2->Node1