정리하자면 awakeFromNib()은 UICollection View로 그림들이 로드될 때(awake) 호출되는 함수다.
viewDidLoad -> UITableView ->> DataSource Trigger --> dequeuing from TableView cache ->> load instance with UX from storyboard -> awakeFromNib called
호출 순서
[TIL] Swift. awakeFromNib