 
 	extension NSUIPanGestureRecognizer
     {
-		func nsuiNumberOfTouches() -> Int
+		final func nsuiNumberOfTouches() -> Int
         {
 			return 1
 		}
         
         /// FIXME: Currently there are no more than 1 touch in OSX gestures, and not way to create custom touch gestures.
-		func nsuiLocationOfTouch(touch: Int, inView: NSView?) -> NSPoint
+		final func nsuiLocationOfTouch(touch: Int, inView: NSView?) -> NSPoint
         {
 			return super.locationInView(inView)
 		}


	extension NSScreen
    {
		var nsuiScale: CGFloat
        {
			return self.backingScaleFactor
		}

    extension NSUIRotationGestureRecognizer
    {
        /// FIXME: Currently there are no velocities in OSX gestures, and not way to create custom touch gestures.
        final var velocity: CGFloat
        {
            return 0.1
        }
