         
         collectionView!.contentInset = UIEdgeInsets(top: tabNavigationController!.tabNavigationBar.bounds.height, left: 0.0, bottom: 0.0, right: 0.0)
         collectionView!.scrollIndicatorInsets = collectionView!.contentInset
-    }
-    
-    override func viewDidLayoutSubviews() {
-        super.viewDidLayoutSubviews()
-        
-        _backgroundFilterView.frame = CGRect(x: 0.0, y: min(0.0, collectionView!.contentOffset.y), width: tabNavigationController?.tabNavigationBar.bounds.width ?? 0.0, height: tabNavigationController?.tabNavigationBar.bounds.height ?? 0.0)
     }
 }
 

}

fileprivate class _AssetCollectionViewController: UICollectionViewController {
    private var _backgroundFilterView: UIView = UIView()
    var _photoAssetCollection: PHAssetCollection!
    var _photoAssets: PHFetchResult<PHAsset>!
    

        }
        
        return cell
    }
}

// MARK: UIScrollViewDelegate.

extension _AssetCollectionViewController {
    override func scrollViewDidScroll(_ scrollView: UIScrollView) {
        _backgroundFilterView.frame = CGRect(x: 0.0, y: min(0.0, collectionView!.contentOffset.y), width: tabNavigationController?.tabNavigationBar.bounds.width ?? 0.0, height: tabNavigationController?.tabNavigationBar.bounds.height ?? 0.0)
    }
}

