Function update

src/include/nlohmann/json.hpp:3438–3441

@brief updates a JSON object from another object, overwriting existing keys @sa https://json.nlohmann.me/api/basic_json/update/

    /// @brief updates a JSON object from another object, overwriting existing keys
    /// @sa https://json.nlohmann.me/api/basic_json/update/
    void update(const_reference j, bool merge_objects = false)
    {
        update(j.begin(), j.end(), merge_objects);
    }

    /// @brief updates a JSON object from another object, overwriting existing keys
    /// @sa https://json.nlohmann.me/api/basic_json/update/