Swift类多重继承

我创建了这样一个类：

class number1: UIScrollView {

init() {
    super.init(frame: CGRect(x: 9, y: 780, width: 1024, height: 267))
    self.contentSize = CGSize(width: 100, height: 267)
    self.backgroundColor = UIColor.clear
    self.autoresizingMask = UIView.AutoresizingMask(rawValue: UIView.AutoresizingMask.RawValue(UInt8(UIView.AutoresizingMask.flexibleWidth.rawValue)))

    //followed by do blablabla I dont want in my new class

}

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

现在我想要一个类似于我的一等的二等舱，但是没有布拉

class number2: number1 {

override init() {
    super.init()
    self.frame = CGRect(x: 400, y: 10, width: 196, height: 500)
}

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

}

---

我这样做，但不知道如何删除“布拉布拉”。最简单的方法是从UIScrollView继承init，而不是从类number1继承。如何做到这一点？

这里只是简单介绍一下，但应该足够了：

class number1: UIScrollView {
    init() {
        super.init()
        // Do stuff common to all classes
        setup()
    }

    func setup() {
        // Do stuff for this class
    }
}


class number2: number1 {
    override func setup() {
        // Do stuff for this class only
    }
}

---

这里只是简单的介绍，但应该足够了：

class number1: UIScrollView {
    init() {
        super.init()
        // Do stuff common to all classes
        setup()
    }

    func setup() {
        // Do stuff for this class
    }
}


class number2: number1 {
    override func setup() {
        // Do stuff for this class only
    }
}