Function as_byte_string_view

include/jsoncons/basic_json.hpp:1651–1659

        }

        byte_string_view as_byte_string_view() const
        {
            auto result = try_as_byte_string_view();
            if (!result)
            {
                JSONCONS_THROW(conv_error(result.error().code()));
            }
            return *result;
        }

        int compare(const basic_json& rhs) const noexcept
        {