+ Long_t NofPads(Int_t statusMask, Bool_t matchMask=kTRUE) const;
+
+ /// Return true as the function Compare is implemented
+ Bool_t IsSortable() const { return kTRUE; }
+
+// Bool_t IsEqual(const TObject* obj) const;
+
+ virtual Int_t Compare(const TObject* obj) const;