corr_pileupShift Node1 corr_pileupShift - m_runMin - m_runMax + corr_pileupShift() + ~corr_pileupShift() + getCorr() Node2 TFile Node2->Node1 -m_file Node3 TH1D + GetBinContent() + SetBinContent() Node3->Node1 -m_haverage