inline void SetSysCovMatrix(Double_t *sys);
void SetNumberOfPresamples(Int_t n) { fNumberOfPresamples = n;}
void SetNumberOfPostsamples(Int_t n) { fNumberOfPostsamples = n;}
inline void SetSysCovMatrix(Double_t *sys);
void SetNumberOfPresamples(Int_t n) { fNumberOfPresamples = n;}
void SetNumberOfPostsamples(Int_t n) { fNumberOfPostsamples = n;}