         // PlayerRateKey, PlayerObserverContext
         
         if (context == &PlayerItemObserverContext) {
+            
             // PlayerStatusKey
             
             if keyPath == PlayerKeepUpKey {
+                
                 // PlayerKeepUpKey
                 
                 if let item = self._playerItem {

                })
            }
        }
        //else {
        //    super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
        //}
    }

}

                    }
                }
                
                if let status = change?[NSKeyValueChangeKey.newKey] as? NSNumber {
                    switch (status.intValue as AVPlayerStatus.RawValue) {
                    case AVPlayerStatus.readyToPlay.rawValue:
                        self._playerView.playerLayer.player = self._avplayer
                        self._playerView.playerLayer.isHidden = false
                    case AVPlayerStatus.failed.rawValue:
                        self.playbackState = PlaybackState.failed
                    default:
                        break
                    }
                }
                
            } else if keyPath == PlayerLoadedTimeRangesKey {
                
                // PlayerLoadedTimeRangesKey
                
                if let item = self._playerItem {
