void Init(AliITSsegmentationSSD *seg,AliITSresponseSSD *resp);
// Create maps to build the lists of tracks for each summable digit
void InitSimulationModule(Int_t module,Int_t events);
-// // Add summable digits to module maps.
-// void AddSDigitsToModule(TClonesArray *sdig,Int_t mask);
// Digitize module from the sum of summable digits.
void FinishSDigitiseModule();
//Digitizes all of the hits in a module