root:
  items:
       - type: clip
         id: 2
         bounds: [0, 0, 200, 200]
         complex:
           - rect: [0, 0, 200, 200]
             radius: {
               top-left: 20,
               top-right: 20,
               bottom-left: 20,
               bottom-right: 20,
             }
         items:
         - type: rect
           bounds: [0, 0, 200, 200]
           color: green