Method string to_string

extern/json/json.hpp:24344–24348

@brief user-defined to_string function for JSON values @sa https://json.nlohmann.me/api/basic_json/to_string/

/// @brief user-defined to_string function for JSON values
/// @sa https://json.nlohmann.me/api/basic_json/to_string/
NLOHMANN_BASIC_JSON_TPL_DECLARATION
std::string to_string(const NLOHMANN_BASIC_JSON_TPL& j)
{
    return j.dump();
}

inline namespace literals
{