{
  "feature": {
    "config": {
      "to_place": {
        "state": {
          "Name": "minecraft:brown_mushroom"
        },
        "type": "minecraft:simple_state_provider"
      }
    },
    "type": "minecraft:simple_block"
  },
  "placement": [
    {
      "count": 6,
      "type": "minecraft:count"
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "xz_spread": {
        "distribution": [
          {
            "data": 0,
            "weight": 1
          },
          {
            "data": 14,
            "weight": 1
          },
          {
            "data": -14,
            "weight": 1
          }
        ],
        "type": "minecraft:weighted_list"
      },
      "y_spread": 0,
      "type": "minecraft:random_offset"
    },
    {
      "heightmap": "MOTION_BLOCKING_NO_LEAVES",
      "type": "minecraft:heightmap"
    },
    {
      "predicate": {
        "blocks": "minecraft:air",
        "type": "minecraft:matching_blocks"
      },
      "type": "minecraft:block_predicate_filter"
    },
    {
      "predicate": {
        "predicates": [
          {
            "blocks": "#arboria:dirt",
            "offset": [
              0,
              -1,
              0
            ],
            "type": "minecraft:matching_blocks"
          },
          {
            "blocks": "minecraft:birch_wood",
            "offset": [
              0,
              -1,
              0
            ],
            "type": "minecraft:matching_blocks"
          }
        ],
        "type": "minecraft:any_of"
      },
      "type": "minecraft:block_predicate_filter"
    },
    {
      "type": "minecraft:biome"
    }
  ]
}