RAII
Resource Acquisition Is Initialization
https://ja.wikipedia.org/wiki/RAII
https://qiita.com/wx257osn2/items/e2e3bcbfdd8bd02872aa
https://qiita.com/ktokhrtk/items/4237038c5ac41f5b953a
https://zenn.dev/eduidl/articles/b708cd28c9d07a