Before (should be empty): 

After (should not be empty): 
(GraphicsLayer
  (bounds 785.00 4016.00)
  (children 1
    (GraphicsLayer
      (bounds 785.00 4016.00)
      (contentsOpaque 1)
      (drawsContent 1)
      (children 1
        (GraphicsLayer
          (position 480.00 30.00)
          (bounds 300.00 100.00)
          (contentsOpaque 1)
        )
      )
    )
  )
)
After (should be empty):