---
root:
  items:
    - type: stacking-context
      bounds: [0, 0, 120, 120]
      items:
        - type: rect
          bounds: [0, 0, 120, 120]
          color: [0, 0, 0, 1]
        - type: rect
          bounds: [10, 10, 50, 50]
          color: [0, 46, 0, 1]
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          bounds: [10, 60, 50, 50]
          color: [0, 109, 128, 1]
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          bounds: [60, 10, 50, 50]
          color: [128, 0, 18, 1]
        - type: rect
          bounds: [60, 60, 50, 50]
          color: [64, 64, 64, 1]
