 
 @objc
 open class DKPhotoGalleryContentVC: UIViewController, UIScrollViewDelegate {
-	
-	internal var items: [DKPhotoGalleryItem]!
+    
+    internal var items: [DKPhotoGalleryItem]!
     
     public var customLongPressActions: [UIAlertAction]?
     public var customPreviewActions: [Any]?

        vc2.view.isHidden = true
        self.mainView.addSubview(vc2.view)
        self.addToReuseQueue(vc: vc2)

        let vc3 = DKPhotoPlayerPreviewVC()
        vc3.view.isHidden = true
        self.mainView.addSubview(vc3.view)
        self.addToReuseQueue(vc: vc3)

        let vc4 = DKPhotoPlayerPreviewVC()
        vc4.view.isHidden = true
        self.mainView.addSubview(vc4.view)
        self.addToReuseQueue(vc: vc4)

        let vc5 = DKPhotoPlayerPreviewVC()
        vc5.view.isHidden = true
        self.mainView.addSubview(vc5.view)

        }
    }
    
    private let mainView = DKPhotoGalleryScrollView()
    private var reuseableVCs: [ObjectIdentifier : [DKPhotoBasePreviewVC] ] = [:] // DKPhotoBasePreviewVC.Type : [DKPhotoBasePreviewVC]
    private var visibleVCs: [Int : DKPhotoBasePreviewVC] = [:]
    
    open override func viewDidLoad() {
        super.viewDidLoad()
        
        self.automaticallyAdjustsScrollViewInsets = false
        self.view.backgroundColor = UIColor.clear
        
        self.mainView.frame = CGRect(x: 0, y: 0, width: self.view.bounds.width + 20, height: self.view.bounds.height)
        self.mainView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        self.mainView.delegate = self
