https://docs.unrealengine.com/5.3/ja/epic-cplusplus-coding-standard-for-unreal-engine/#%E3%82%A4%E3%83%B3%E3%82%AF%E3%83%AB%E3%83%BC%E3%82%B7%E3%83%96%E3%81%AA%E8%A8%80%E8%91%89%E3%81%AE%E9%81%B8%E6%8A%9E