preserve-3d
flat
{
  "bounds": [800, 600],
  "children": [
    {
      "bounds": [800, 600],
      "contentsOpaque": true,
      "drawsContent": true,
      "children": [
        {
          "position": [18, 10],
          "bounds": [100, 100],
          "contentsOpaque": true,
          "shouldFlattenTransform": false,
          "3dRenderingContext": 1,
          "drawsContent": true,
          "backgroundColor": "#0000FF",
          "transform": [
            [1, 0, 0, 0],
            [0, 1, 0, 0],
            [0, 0, 1, 0],
            [0, 0, 1, 1]
          ]
        },
        {
          "position": [18, 120],
          "bounds": [100, 100],
          "contentsOpaque": true,
          "drawsContent": true,
          "backgroundColor": "#0000FF",
          "transform": [
            [1, 0, 0, 0],
            [0, 1, 0, 0],
            [0, 0, 1, 0],
            [0, 0, 1, 1]
          ]
        }
      ]
    }
  ]
}