definitions/features/random_roofed_forest_feature.json

{
  "format_version": "1.16.0",
  "minecraft:weighted_random_feature": {
    "description": {
      "identifier": "minecraft:random_roofed_forest_feature"
    },
    "features": [
      [ "minecraft:huge_mushroom_feature", 75 ],
      [ "minecraft:select_roofed_tree_feature", 630 ],
      [ "minecraft:select_birch_tree_feature", 70 ],
      [ "minecraft:fancy_oak_tree_feature", 30 ],
      [ "minecraft:select_oak_tree_feature", 195 ]
    ]
  }
}