如何使用相同的代码实现缩短多个类

Question

例如，我有这5个名称为OneTVC, TwoTVC, ..., FiveTVC的TVC，并且所有已实施名为SomeProtocol的协议

protocol SomeProtocol {
    var sourceViewController: UIViewController! { get set }
    weak var bottomView: SomeCustomView! { get set }

    func configure(sourceViewController sourceViewController: UIViewController)
}

所有TVC都使用相同的代码实现了SomeProtocol

class OneTVC: UITableViewCell, SomeProtocol {
    var sourceViewController:UIViewController!
    @IBOutlet weak var bottomView: SomeCustomView!

    func configure(sourceViewController sourceViewController: UIViewController) {
        self.sourceViewController = sourceViewController

        bottomView.btnOne.addTarget(.... #selector(self.doSomething(_:)))
        bottomView.addTarget(.... #selector(self.doAnother(_:)))
    }
}

/* all these codes */
extension OneTVC {
    func doSomething(sender:UIButton) {
        // same codes as TwoTVC ..., FiveTVC
    }

    func doAnother(sender:UIButton) {
        // same codes as TwoTVC ..., FiveTVC
    }
}
/* all these codes */

我希望能做的不是写在/* all these codes */

中的代码

使用协议我可能会做这样的事情

protocol SomeProtocol {
    var sourceViewController: UIViewController! { get set }
    weak var bottomView: SomeCustomView! { get set }

    func configure(sourceViewController sourceViewController: UIViewController)
}

extension SomeProtocol {
    func doSomething(sender:UIButton) {
        // some custom implementation
    }

    func doAnother(sender:UIButton) {
        // some custom implementation
    }
}

但我无法做到这一点，因为@objc protocol SomeProtocol需要将此协议声明为像addTarget(_:, _:, _:)这样的Objective-C协议，但通过这样做，我无法使用这些可选或隐式运算符! or ?用于在协议中声明变量

如果我创建一个超类，我不能覆盖我需要的@IBOutlets变量。

class SomeSuperClass: UITableViewCell, SomeProtocol {
    var sourceViewController:UIViewController!
    @IBOutlet weak var bottomView: SomeCustomView!

    func configure(sourceViewController sourceViewController: UIViewController) {
        self.sourceViewController = sourceViewController

        bottomView.btnOne.addTarget(.... #selector(self.doSomething(_:)))
        bottomView.addTarget(.... #selector(self.doAnother(_:)))
    }
}

class OneTVC: SomeSuperClass  {
    @IBOutlet override weak var bottomView: SomeCustomView! // < this here makes an error
    // .. rest of the codes
}

我该怎么办？