AliTRDCalibraVdriftLinearFit(const AliTRDCalibraVdriftLinearFit &ped);
AliTRDCalibraVdriftLinearFit(const TObjArray &obja);
virtual ~AliTRDCalibraVdriftLinearFit();
+ virtual Long64_t Merge(TCollection* list);
+ virtual void Copy(TObject &c) const;
AliTRDCalibraVdriftLinearFit& operator = (const AliTRDCalibraVdriftLinearFit &source);