xAODMaker::ITrigCaloClusterCnvTool Node1 xAODMaker::ITrigCaloCluster CnvTool + convert() + interfaceID() Node3 xAODMaker::TrigCaloCluster CnvTool + TrigCaloClusterCnvTool() + convert() Node1->Node3 Node2 IAlgTool Node2->Node1