Register and use collection view cells with generic type

CollectionView+Extensions.swift

// USAGE
collectionView.register([CELL_CLASS_NAME.self])

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell: CELL_CLASS_NAME = collectionView.dequeueReusableCell(indexPath: indexPath)
}
// USAGE

import UIKit

extension UICollectionView {

    func register(_ cells: [UICollectionViewCell.Type]) {
        cells.forEach { cell in
            register(cell.self, forCellWithReuseIdentifier: cell.identifier)
        }
    }

    func dequeueReusableCell<T: UICollectionViewCell>(indexPath: IndexPath) -> T {
        dequeueReusableCell(withReuseIdentifier: T.identifier, for: indexPath) as! T
    }
}

extension UICollectionViewCell {

    static var identifier: String {
        String(describing: self.self)
    }
}