ExampleViewControllerLocalized.swift

class ExampleViewController: UIViewController {
  @IBOutlet weak var collectionView: UICollectionView!

  override func viewDidLoad() {
    title = "Example title".localized()
    collectionView.registerCell(ExampleCell)
  }
}

Localization files example:

EN:
"Example title" = "Example title";

PT:
"Example title" = "Título para exemplo";

FR:
"Example title" = "Exemple titre";