Muon::ChamberResPlots Node1 Muon::ChamberResPlots + book() + fill() Node2 std::vector< Muon:: ResPlotsPt > Node2->Node1 +plots_p Node3 Muon::ResPlotsPt + book() + fill() Node3->Node2 +elements Node4 TH2 Node4->Node3 +res_p +pull_p +exerr_p Node5 std::vector< Muon:: ResPlots > Node5->Node1 +plots Node6 Muon::ResPlots + book() + fill() Node6->Node5 +elements Node7 TH1 Node7->Node6 +res +exerr +pull