     titleLabel.font = AppTheme.containerScheme.typographyScheme.headline6
     titleLabel.sizeToFit()
 
-    let titleInsets = UIEdgeInsets(top: 0,
-                                   left: Constants.inset,
-                                   bottom: Constants.inset,
-                                   right: Constants.inset)
+    let titleInsets = UIEdgeInsets(
+      top: 0,
+      left: Constants.inset,
+      bottom: Constants.inset,
+      right: Constants.inset)
     let titleSize = titleLabel.sizeThatFits(containerView.bounds.size)
 
     containerView.addSubview(titleLabel)

  }

  override func scrollViewWillEndDragging(
      _ scrollView: UIScrollView,
      withVelocity velocity: CGPoint,
      targetContentOffset: UnsafeMutablePointer<CGPoint>) {
    let headerView = headerViewController.headerView
    if scrollView == headerView.trackingScrollView {
      headerView.trackingScrollWillEndDragging(

    return CGSize(width: cellWidthHeight, height: cellWidthHeight)
  }

  override func collectionView(
    _ collectionView: UICollectionView,
    didSelectItemAt indexPath: IndexPath
  ) {
    let node = self.node.children[indexPath.row]
    var vc: UIViewController
    if node.isExample() {
