{
    "catalog": [
        {
          "name": "Terrain",
          "type": "group",
          "items": [
            {
                "name": "Pennsylvania",
                "type": "cesium-terrain",
                "url": "https://assets.agi.com/stk-terrain/v1/tilesets/PAMAP/tiles"
            },
            {
                "name": "Caco Demo",
                "type": "cesium-terrain",
                "url": "http://stkdesktop.agi.com/stk-terrain/v1/tilesets/CacoSample/tiles",
                "rectangle": [
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            },
            {
                "name": "Caco with Imagery",
                "type": "composite",
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                ],
                "items": [
                    {
                        "name": "Caco with Imagery - Imagery",
                        "type": "url-template",
                        "url": "http://agi-tas-demo.s3-website-us-east-1.amazonaws.com/SandwichOrtho/TILES/caco_f1_rgb1_v4_ortho_TILES/{z}/{x}/{reverseY}.png",
                        "minimumLevel": 13,
                        "maximumLevel": 21,
                        "rectangle": [
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                    },
                    {
                      "name": "Caco with Imagery - Terrain",
                      "type": "cesium-terrain",
                      "url": "http://stkdesktop.agi.com/stk-terrain/v1/tilesets/CacoSample/tiles"
                    }
                ]
            }
          ]
        }
    ]
}