protocol Modelable {
    var relatedCellIdentifier: String { get }
}

protocol ConfigurableCell {
    func configure(with model: Modelable)
}

// MARK: Models

struct Pomme: Modelable {
    let relatedCellIdentifier = String(describing: PommeCell.self)
}

struct Abricot: Modelable {
    let relatedCellIdentifier = String(describing: AbricotCell.self)
}

struct Banane: Modelable {
    let relatedCellIdentifier = String(describing: BananeCell.self)
}

// MARK: Cells

final class PommeCell: UICollectionViewCell, ConfigurableCell {

    override init(frame: CGRect) {
        super.init(frame: frame)
        addConstraints([
            widthAnchor.constraint(equalToConstant: 100),
            heightAnchor.constraint(equalToConstant: 50)
        ])
    }

    required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") }

    func configure(with model: Modelable) {
        backgroundColor = .green
    }
}

final class AbricotCell: UICollectionViewCell, ConfigurableCell {

    override init(frame: CGRect) {
        super.init(frame: frame)
        addConstraints([
            widthAnchor.constraint(equalToConstant: 50),
            heightAnchor.constraint(equalToConstant: 50)
        ])
    }

    required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") }

    func configure(with model: Modelable) {
        backgroundColor = .orange
    }
}

final class BananeCell: UICollectionViewCell, ConfigurableCell {

    override init(frame: CGRect) {
        super.init(frame: frame)
        addConstraints([
            widthAnchor.constraint(equalToConstant: 200),
            heightAnchor.constraint(equalToConstant: 50)
        ])
    }

    required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") }

    func configure(with model: Modelable) {
        backgroundColor = .yellow
    }
}