{
  "type": "minecraft:simple_random_selector",
  "config": {
    "features": [
      {
        "feature": {
          "config": {
            "ignore_vines": true,
            "force_dirt": true,
            "minimum_size": {
              "type": "minecraft:two_layers_feature_size",
              "min_clipped_height": 1,
              "limit": 1,
              "lower_size": 1,
              "upper_size": 1
            },
            "dirt_provider": {
              "type": "minecraft:simple_state_provider",
              "state": {
                "Name": "minecraft:rooted_dirt"
              }
            },
            "trunk_provider": {
              "type": "minecraft:simple_state_provider",
              "state": {
                "Name": "minecraft:oak_wood"
              }
            },
            "foliage_provider": {
              "type": "minecraft:simple_state_provider",
              "state": {
                "Name": "minecraft:oak_leaves"
              }
            },
            "trunk_placer": {
              "type": "minecraft:forking_trunk_placer",
              "base_height": 7,
              "height_rand_a": 4,
              "height_rand_b": 4
            },
            "foliage_placer": {
              "type": "minecraft:fancy_foliage_placer",
              "radius": 2,
              "offset": 0,
              "height": 2
            },
            "decorators": []
          },
          "type": "minecraft:tree"
        },
        "placement": [
          {
            "type": "minecraft:block_predicate_filter",
            "predicate": {
              "type": "minecraft:would_survive",
              "state": {
                "Name": "minecraft:fern"
              }
            }
          },
          {
            "type": "minecraft:count",
            "count": 4
          }
        ]
      }
    ]
  }
}