{
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      "bounds": [800, 600],
      "contentsOpaque": true,
      "backgroundColor": "#FFFFFF"
    },
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      "name": "Scrolling background of LayoutView #document",
      "bounds": [385, 230],
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      "backgroundColor": "#C0C0C0",
      "transform": 1
    },
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      "name": "VerticalScrollbar",
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      "transform": 1
    },
    {
      "name": "LayoutBlockFlow DIV id='iframe-content' class='box'",
      "bounds": [210, 210],
      "contentsOpaque": true,
      "backgroundColor": "#0000FF",
      "transform": 2
    },
    {
      "name": "LayoutBlockFlow HTML",
      "position": [5, 5],
      "bounds": [50, 50],
      "backgroundColor": "#00000033"
    }
  ],
  "transforms": [
    {
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      "transform": [
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}