         }
         return snapshot
     }
-    
-    private func cellStyleForTraitCollection(_ traitCollection: UITraitCollection) -> CountyCellDisplayStyle {
-        return traitCollection.horizontalSizeClass == .regular ? .grid : .table
-    }
-    
-    @objc private func reloadData() {
-        dataSource.apply(snapshotForCurrentState(), animatingDifferences: false)
-    }
 }
 
 // MARK: UICollectionViewDelegateFlowLayout

    
    override func viewDidLoad() {
        super.viewDidLoad()
        navigationItem.title = style.navigationItemTitle
        
        view.addSubview(collectionView)

            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
        
        view.addSubview(emptyCountiesNoticeView)
        emptyCountiesNoticeView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            emptyCountiesNoticeView.leadingAnchor.constraint(equalTo: view.readableContentGuide.leadingAnchor),
            emptyCountiesNoticeView.trailingAnchor.constraint(equalTo: view.readableContentGuide.trailingAnchor),
            emptyCountiesNoticeView.centerYAnchor.constraint(equalTo: view.readableContentGuide.centerYAnchor)
        ])
        
        reloadData()
        NotificationCenter.default.addObserver(self, selector: #selector(reloadData), name: FavouritesController.favouriteCountiesDidChangeNotification, object: FavouritesController.shared)
    }
    
