message: Small fix to add back the name of the origin and hmpid trees
diff: ClassImp(AliAnalysisTaskAO2Dconverter);
  -const TString AliAnalysisTaskAO2Dconverter::TreeName[kTrees] = { "O2collision", "DbgEventExtra", "O2track", "O2trackcov", "O2trackextra", "O2fwdtrack", "O2fwdtrackcov", "O2calo", "O2calotrigger", "O2muoncluster", "O2zdc", "O2fv0a", "O2fv0c", "O2ft0", "O2fdd", "O2v0", "O2cascade", "O2tof", "O2mcparticle", "O2mccollision", "O2mctracklabel", "O2mccalolabel", "O2mccollisionlabel", "O2bc", "O2run2bcinfo" };
  +const TString AliAnalysisTaskAO2Dconverter::TreeName[kTrees] = { "O2collision", "DbgEventExtra", "O2track", "O2trackcov", "O2trackextra", "O2fwdtrack", "O2fwdtrackcov", "O2calo", "O2calotrigger", "O2muoncluster", "O2zdc", "O2fv0a", "O2fv0c", "O2ft0", "O2fdd", "O2v0", "O2cascade", "O2tof", "O2mcparticle", "O2mccollision", "O2mctracklabel", "O2mccalolabel", "O2mccollisionlabel", "O2bc", "O2run2bcinfo", "O2origin", "O2hmpid" };
  -const TString AliAnalysisTaskAO2Dconverter::TreeTitle[kTrees] = { "Collision tree", "Collision extra", "Barrel tracks Parameters", "Barrel tracks Covariance", "Barrel tracks Extra", "Forward tracks Parameters", "Forward tracks Covariances", "Calorimeter cells", "Calorimeter triggers", "MUON clusters", "ZDC", "FV0A", "FV0C", "FT0", "FDD", "V0s", "Cascades", "TOF hits", "Kinematics", "MC collisions", "MC track labels", "MC calo labels", "MC collision labels", "BC info", "Run 2 BC Info" };
  +const TString AliAnalysisTaskAO2Dconverter::TreeTitle[kTrees] = { "Collision tree", "Collision extra", "Barrel tracks Parameters", "Barrel tracks Covariance", "Barrel tracks Extra", "Forward tracks Parameters", "Forward tracks Covariances", "Calorimeter cells", "Calorimeter triggers", "MUON clusters", "ZDC", "FV0A", "FV0C", "FT0", "FDD", "V0s", "Cascades", "TOF hits", "Kinematics", "MC collisions", "MC track labels", "MC calo labels", "MC collision labels", "BC info", "Run 2 BC Info", "DF ids", "HMPID info" };
  const TClass *AliAnalysisTaskAO2Dconverter::Generator[kGenerators] = {AliGenEventHeader::Class(), AliGenCocktailEventHeader::Class(), AliGenDPMjetEventHeader::Class(), AliGenEpos3EventHeader::Class(), AliGenEposEventHeader::Class(), AliGenEventHeaderTunedPbPb::Class(), AliGenGeVSimEventHeader::Class(), AliGenHepMCEventHeader::Class(), AliGenHerwigEventHeader::Class(), AliGenHijingEventHeader::Class(), AliGenPythiaEventHeader::Class(), AliGenToyEventHeader::Class()};
  