https://github.com/ynoolee/JavaPractice/commit/25c12e160e276099106860c03ed748bca29ff2f1 -> [이펙티브자바 Item 78](https://github.com/Dev-Prison/Effective-Java/blob/main/app/src/main/java/com/programmers/java/chapt11/item78/item78_%EA%B3%B5%EC%9C%A0_%EC%A4%91%EC%9D%B8_%EA%B0%80%EB%B3%80_%EB%8D%B0%EC%9D%B4%ED%84%B0%EB%8A%94_%EB%8F%99%EA%B8%B0%ED%99%94_%ED%95%B4_%EC%82%AC%EC%9A%A9%ED%95%98%EB%9D%BC.md)