CP::KinematicHistAlg::HistGroup Node1 CP::KinematicHistAlg ::HistGroup Node2 std::vector< CP::Kinematic HistAlg::HistSubgroup > Node2->Node1 +perObject Node3 CP::KinematicHistAlg ::HistSubgroup Node3->Node2 +elements Node4 TH1 + Fill() + Fill() + Fill() + GetBinContent() + GetBinContent() + GetBinContent() + SetBinContent() + SetBinContent() + SetBinContent() + SetBinError() + SetBinError() + SetBinError() + Sumw2() Node4->Node1 +multiplicity Node4->Node3 +phi +eta +pt