void SetActive(Int_t* active, Int_t n);
/** @param id Register volume @a id to be active */
void AddActive(Int_t id);
+ /** Get Array of active volume numbers
+ @return constant reference to active volume numbers */
+ const TArrayI& ActiveIds() const { return fActive; }
/** Set an external geometry builder
@param b Geometry builder */
void SetBuilder(AliFMDGeometryBuilder* b) { fBuilder = b; }