- AliRunLoader* fRunLoader; //!< AliRunLoader pointer
- AliLoader* fLoader; //!< MUON loader pointer
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- AliMUONData* fData; //!< AliMUONData pointer (to access containers)
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- TTree * fTree ; //!pointer to the analyzed TTree or TChain
- AliESD * fESD ; //! Declaration of leave types
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