LayoutTests/model-element/model-element-graphics-layers-opacity-expected.txt

 (platform layer
  (position 158.00 83.00)
  (bounds 300.00 150.00)
  (opacity 0.50)
  (children
    (contents layer (model)
      (position 0.00 0.00)
      (bounds 300.00 150.00)
      (opacity 0.50)
    )
  )
)