---
root:
  items:
    - type: border
      bounds: [ 0, 0, 200, 200 ]
      width: 20
      border-type: radial-gradient
      center: [ 100, 100 ]
      radius: [ 200, 200 ]
      stops: [ 0.0, red, 0.5, red, 0.5, green ]
      slice: [ 50 ]