{
    "format_version": "1.20.20",
    "minecraft:single_block_feature": {
        "description": {
            "identifier": "farmersdelight:brown_mushroom_feature"
        },
        "places_block": "minecraft:brown_mushroom",
        "enforce_survivability_rules": true,
        "enforce_placement_rules": false,
        "may_attach_to": {
            "bottom": [
                {
                    "name": "minecraft:mycelium"
                }
            ]
        },
        "may_replace": [
            "minecraft:air"
        ]
    }
}