Method insert

src/game/recomp_data_api.cpp:30–34

    }

    bool insert(const KeyType& key, ValueType val) {
        std::lock_guard lock{mutex};
        auto ret = map.insert_or_assign(key, val);
        return ret.second;
    }

    bool erase(const KeyType& key) {
        std::lock_guard lock{mutex};