protected:
Int_t fNGenerators; // Number of generators booked
+ Float_t fTotalRate; // Total rate of the generators booked
Bool_t fRandom; // Flag to select random generator from list
Bool_t fUsePerEventRate; // Flag to generate the events according to the rate per event
TArrayF fProb; // Probability of an event (if fRandom == kTRUE)