func animationRotateCover() {

        coverImageView.layer.removeAllAnimations()

        let animation = CABasicAnimation(keyPath: "transform.rotation")

        animation.fromValue =

        animation.toValue = CGFloat.pi *

        animation.duration =

        animation.isCumulative = true

        animation.repeatCount = Float.infinity

        coverImageView.layer.add(animation, forKey: nil)

    }

      UIView.performWithoutAnimation {

           self.videoPartCollectionView.reloadData()

      }

    var rightTappedSelector: Selector?

    @IBAction func rightTappedAction(_ sender: Any) {

        guard let selector = rightTappedSelector else {

            return

        }

        rightButton.sendAction(selector, to: nil, for: nil)

    }

extension CGAffineTransform {

    func getTransformRotation() -> CGFloat {

        return atan2(self.b, self.a)  *  / CGFloat.pi

    }

}

extension Date {

    func nanosecond() -> Int64 {

        let nanosecond: Int64 = Int64(Calendar.current.dateComponents([.nanosecond], from: self).nanosecond ?? )

        return Int64(self.timeIntervalSince1970 * ) + nanosecond

    }

}