     // MARK: Initialization
 
     init(scrollView: UIScrollView) {
-        self.scrollView = scrollView
         super.init(frame: .zero)
         scrollView.addSubview(self)
     }

    
    // MARK: Properties
    
    weak var scrollView: UIScrollView?
    
    var view: UIView? {
        didSet {

        handler = nil
    }
    
    public override func willMove(toSuperview newSuperview: UIView?) {
        super.willMove(toSuperview: newSuperview)
        
        if newSuperview == nil, superview is UIScrollView {
            stopObserver()
        }
    }
    
    public override func didMoveToSuperview() {
        super.didMoveToSuperview()
        
        if superview is UIScrollView {
            startObserver()
        }
    }
    
