调用协议扩展中的方法,而不是视图控制器中的方法实现

所以我有一个viewController,它拥有一个自定义视图,

viewController类符合 ViewProtocol

我想什么时候 someAction 方法在中触发 someCustomizedView

它会打印出来 " method in otherCustomizedClass called "

但它会打印 (" method in extension Called") 相反

这个 theNotOptionalMethod 效果很好,但不是可选方法。

我对协议扩展有什么误解吗?

请帮忙,已经挣扎了好几个小时了,谢谢

protocol ViewDelegate: class {

    func theNOTOptionalMethod()

}

extension ViewDelegate {

    func theOptionalMethod(){
        print (" method in extension Called")
    }
}

class someCustomizedView: UIView {

    weak var deleage: ViewDelegate?

    @IBAction func someAction(sender: UIButton) {
        deleage?.theOptionalMethod()
    }
}

class someCustomizedVC: UIViewController, ViewDelegate {

    lazy var someView: someCustomizedView = {
        var v = someCustomizedView()
        v.deleage = self
        return v
    }()


    //...... someView added to controller


    func theNOTOptionalMethod() {
        // do nothing
    }

    func theOptionalMethod() {
        print (" method in otherCustomizedClass called ")
    }

}