Closed boris-dev closed 6 years ago
https://github.com/kalter704/liga-internship/blob/97d86d424333645be2d8b242c72d353658a01016/javacore-song-task/src/main/java/ru/liga/songtask/SongChange.java#L56
Присмотрелся и понял смысл этого интерфейса
https://github.com/kalter704/liga-internship/blob/97d86d424333645be2d8b242c72d353658a01016/javacore-song-task/src/main/java/ru/liga/songtask/SongChange.java#L56