         }
     }
     
-    // private session functions
+}
+
+// MARK: - NextLevel private session configuration support
+
+extension NextLevel {
     
     // re-entrant configuration lock, thanks to SCRecorder
     internal func beginConfiguration() {

    }
}

// MARK: - encoding configuration

extension NextLevel {
    

    
}

// MARK: - capture mode and device settings (flash, torch, focus, exposure, white balance, and frame rate)

extension NextLevel {
    
