message: isMC is still boolean in the repository
diff: void AddTask_GammaConvDalitzV1_pp( Int_t trainConfig = 1, //change different set of cuts
  - Int_t isMC = 0, //0 Exp data, 1 MC data, 2 JJ MC for improves.
  + Bool_t isMC = kFALSE, //0 Exp data, 1 MC data, 2 JJ MC for improves.
  TString photonCutNumberV0Reader = "",
  TString periodNameV0Reader = "",
  Int_t enableQAMesonTask = 0, //enable QA in AliAnalysisTaskGammaConvDalitzV1
  