{
  "feature": {
    "config": {
      "feature": {
        "feature": {
          "config": {
            "to_place": {
              "state": {
                "Name": "minecraft:brown_mushroom"
              },
              "type": "minecraft:simple_state_provider"
            }
          },
          "type": "minecraft:simple_block"
        },
        "placement": [
          {
            "predicate": {
              "blocks": "minecraft:air",
              "type": "minecraft:matching_blocks"
            },
            "type": "minecraft:block_predicate_filter"
          }
        ]
      },
      "tries": 64,
      "xz_spread": 5,
      "y_spread": 3
    },
    "type": "minecraft:random_patch"
  },
  "placement": [
    {
      "count": 2,
      "type": "minecraft:count"
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "heightmap": "MOTION_BLOCKING_NO_LEAVES",
      "type": "minecraft:heightmap"
    },
    {
      "type": "minecraft:biome"
    }
  ]
}