Method get_bson_binary

deps/json/json.hpp:9323–9338

    */
    template<typename NumberType>
    bool get_bson_binary(const NumberType len, binary_t& result)
    {
        if (JSON_HEDLEY_UNLIKELY(len < 0))
        {
            auto last_token = get_token_string();
            return sax->parse_error(chars_read, last_token, parse_error::create(112, chars_read,
                                    exception_message(input_format_t::bson, concat("byte array length cannot be negative, is ", std::to_string(len)), "binary"), nullptr));
        }

        // All BSON binary values have a subtype
        std::uint8_t subtype{};
        get_number<std::uint8_t>(input_format_t::bson, subtype);
        result.set_subtype(subtype);

        return get_binary(input_format_t::bson, len, result);
    }

    /*!
    @brief Read a BSON document element of the given @a element_type.