Scrolling to a section with a sticky header in UICollectionView

StickyHeaderScrollToSection

func scrollToSection(_ section: Int)  {
        if let collectionView = collectionView {
            let indexPath = IndexPath(item: 0, section: section)
            
            if
                let attributes =  collectionView.layoutAttributesForItem(at: indexPath),
                let flowLayout = collectionView.collectionViewLayout as? FlowLayout
            {
                let headerHeight = flowLayout.headerReferenceSize
                let topSectionInset = flowLayout.sectionInset.top
                let topOfHeader = CGPoint(x: 0, y: attributes.frame.minY - headerHeight.height - topSectionInset)
                collectionView.setContentOffset(topOfHeader, animated: true)
            }
        }
    }