????????, ?????? ???????????? ??????? ??? ??? ?????? ??????.?? ????? ????? ?????? ?????????? ?????? ?? ????????? ???. ? ???????:?????? ?????????????? ??????? ????. ??????? ??????-??????????? ???????????????? ??? ?? ??????, ??? ? ?? ?????????? ???????.????????? ? ???? ?????????? ??????? ??????????????? ???????? ??? ????????? ??????.Persistence: Mast