func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
           return (self.setHomeBanners?.count ?? 0) * 2
    }

    func collectionView(_ collectionView: UICollectionView, willDisplay cell: UICollectionViewCell, forItemAt indexPath: IndexPath) {
        var offset = collectionView.contentOffset
//        horizontal
//        let height = collectionView.contentSize.height
//        if offset.y < height/4 {
//            offset.y += height/2
//            collectionView.setContentOffset(offset, animated: false)
//        } else if offset.y > height/4 * 3 {
//            offset.y -= height/2
//            collectionView.setContentOffset(offset, animated: false)
//        }

        let width = collectionView.contentSize.width
        if offset.x < width/4 {
            offset.x += width/2
            collectionView.setContentOffset(offset, animated: false)
        } else if offset.x > width/4 * 3 {
            offset.x -= width/2
            collectionView.setContentOffset(offset, animated: false)
        }
    }