columnar::OptionalColumnExampleTool Node1 columnar::OptionalColumn ExampleTool + m_ptCut + particlesHandle + ptAcc + ptCorrAcc + selectionDec + OptionalColumnExampleTool() + initialize() + callEvents() Node2 asg::AsgTool   + AsgTool() + ~AsgTool() + AsgTool() + operator=() + initialize() + print() + getProperty() + msg_level_name() + getName() + getKey() * getProperty() * msg_level_name() * getName() * getKey() Node2->Node1 Node3 asg::IAsgTool   + ~IAsgTool() + print() Node3->Node2 Node4 IAlgTool     Node4->Node3 Node5 AsgToolBase   + AthAlgTool() + ~AthAlgTool() - AthAlgTool() - AthAlgTool() - operator=() Node5->Node2 Node6 AthCommonDataStore < AthCommonMsg< AlgTool > > - m_evtStore - m_detStore - m_vhka - m_varHandleArraysDeclared + AthCommonDataStore() + evtStore() + detStore() + sysInitialize() + sysStart() + inputHandles() + outputHandles() + declareProperty() + updateVHKA() # renounceArray() # renounce() # extraDeps_update_handler() - declareGaudiProperty() Node6->Node5 Node7 AthCommonMsg< AlgTool >   + msg() + msgLvl() Node7->Node6 Node8 AlgTool     Node8->Node7 Node9 columnar::ColumnarTool<>     Node9->Node1