    std::ostream& DataValue::write(std::ostream& os) const
    {
        std::vector<byte>::size_type end = value_.size();
        for (std::vector<byte>::size_type i = 0; i != end; ++i) {
            os << static_cast<int>(value_[i]);
            if (i < end - 1) os << " ";
        }
        return os;
    }
Unknown