     }
     
     func nextLevelFlashActiveChanged(_ nextLevel: NextLevel) {
-        
     }
     
     func nextLevelTorchActiveChanged(_ nextLevel: NextLevel) {
-        
     }
     
     func nextLevelFlashAndTorchAvailabilityChanged(_ nextLevel: NextLevel) {
-        
     }
     
     // zoom

    
    // video recording session
    func nextLevel(_ nextLevel: NextLevel, didSetupVideoInSession session: NextLevelSession) {
        
    }
    
    func nextLevel(_ nextLevel: NextLevel, didSetupAudioInSession session: NextLevelSession) {
        
    }
    
    func nextLevel(_ nextLevel: NextLevel, didStartClipInSession session: NextLevelSession) {

    }
    
    func nextLevel(_ nextLevel: NextLevel, didAppendVideoSampleBuffer sampleBuffer: CMSampleBuffer, inSession session: NextLevelSession) {
    }
    
    func nextLevel(_ nextLevel: NextLevel, didAppendAudioSampleBuffer sampleBuffer: CMSampleBuffer, inSession session: NextLevelSession) {
    }
    
    func nextLevel(_ nextLevel: NextLevel, didSkipVideoSampleBuffer sampleBuffer: CMSampleBuffer, inSession session: NextLevelSession) {
    }
    
    func nextLevel(_ nextLevel: NextLevel, didSkipAudioSampleBuffer sampleBuffer: CMSampleBuffer, inSession session: NextLevelSession) {
    }
    
    func nextLevel(_ nextLevel: NextLevel, didCompleteSession session: NextLevelSession) {
