     
     // MARK: Notifications
     
-    fileprivate func addObservers()
+    private func addObservers()
     {
         NotificationCenter.default.addObserver(self, selector: #selector(UIApplicationDelegate.applicationWillEnterForeground(_:)), name: NSNotification.Name.UIApplicationWillEnterForeground, object: nil)
         


@objc open class VideoRefreshManager: NSObject
{
    fileprivate static let RetryDelayInSeconds: Double = 3
    
    // MARK:
    
    fileprivate let sessionManager: VimeoSessionManager
    fileprivate weak var delegate: VideoRefreshManagerDelegate?
    
    // MARK:
    
    fileprivate var videos: [VideoUri: Bool] = [:]
    fileprivate let operationQueue: OperationQueue
    
    // MARK: - Initialization
    

    
    // MARK: Private API

    private func doRefreshVideo(_ video: VIMVideo)
    {
        let uri = video.uri!
        
