DCubeHistograms.MyHistoFiller Node1 DCubeHistograms.MyHistoFiller + truthPtHist + truthEtaHist + truthPhiHist + rpcLocalX + rpcLocalY + rpcStationEta + rpcStationPhi + rpcGlobalX + rpcGlobalY + rpcGlobalZ and 204 more... - __chamber_name - __eta_sel - __sector_sel + __init__() + Eta() + fill() + write() Node2 object Node2->Node1