DerivationFramework::BoostedTTbarSkimmingToolAlg Node1 DerivationFramework ::BoostedTTbarSkimmingToolAlg + m_ttbarCut - m_ntot - m_npass + BoostedTTbarSkimmingTool Alg() + ~BoostedTTbarSkimmingTool Alg() + initialize() + finalize() + eventPassesFilter() Node2 extends< AthAlgTool, ISkimmingTool >     Node2->Node1