{
  "type": "minecraft:disk",
  "half_height": 2,
  "radius": {
    "type": "minecraft:uniform",
    "max_inclusive": 5,
    "min_inclusive": 2
  },
  "state_provider": {
    "id": "minecraft:gravel"
  },
  "target": {
    "type": "minecraft:matching_blocks",
    "blocks": [
      "minecraft:dirt",
      "minecraft:grass_block"
    ]
  }
}