+ void Reset(); //deletes all entries
+ void SetOwner(Bool_t owns = kTRUE){ fOwner = owns; }
+ Bool_t IsOwner() {return fOwner;}
+ void SetRandomized(Bool_t rd = kTRUE){fRandomized = rd;}
+ Bool_t IsRandomized()const {return fRandomized;}
+ void SwapParticles(Int_t i, Int_t j);//swaps particles positions; used by AliHBTEvent::Blend