https://appbrewery.com/courses/ios13-app-development-lessons/lectures/11743597
Subclassing a UITableViewController | The App Brewery
Learn to develop iOS 13 apps using Swift 5.1 and Xcode 11
the appsubclassingbrewery
https://higepon.hatenablog.com/entry/20140615/1402837949
Simple UITableViewController in Swift - higepon blog
simpleswiftblog