{
  "feature": "minecraft:patch_red_mushroom",
  "placement": [
    {
      "type": "minecraft:rarity_filter",
      "chance": 256
    },
    {
      "type": "minecraft:count_on_every_layer",
      "count": 1
    },
    {
      "type": "minecraft:height_range",
      "height": {
        "type": "minecraft:uniform",
        "min_inclusive": {
          "above_bottom": 0
        },
        "max_inclusive": {
          "below_top": 0
        }
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}