const std::string &checksum, int64_t size, double age);
ObjectReference FindObject(const std::string &checksum, int64_t size);
bool IsOldObject(const std::string &checksum, int64_t size, double *age);
const std::string &checksum, int64_t size, double age);
ObjectReference FindObject(const std::string &checksum, int64_t size);
bool IsOldObject(const std::string &checksum, int64_t size, double *age);