{
  "tile_processors": [
    {
      "type": "placeholder",
      "target": "GATE",
      "levels": [
        {
          "level": 0,
          "probability": 1.0,
          "success": {
            "minecraft:air{Placeholder: GATE}": 1
          },
          "failure": {
            "minecraft:air": 1
          }
        }
      ]
    }
  ]
}