Method name

extern/json/json.hpp:4320–4323

    exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)

    static std::string name(const std::string& ename, int id_)
    {
        return concat("[json.exception.", ename, '.', std::to_string(id_), "] ");
    }

    static std::string diagnostics(std::nullptr_t /*leaf_element*/)
    {