virtual ~AliTRDCalibraVdriftLinearFit();
AliTRDCalibraVdriftLinearFit& operator = (const AliTRDCalibraVdriftLinearFit &source);
virtual ~AliTRDCalibraVdriftLinearFit();
AliTRDCalibraVdriftLinearFit& operator = (const AliTRDCalibraVdriftLinearFit &source);