{
    "type": "minecraft:delta_feature",
    "config": {
        "contents": {
            "Name": "minecraft:grass_block"
        },
        "rim": {
            "Name": "minecraft:grass_block"
        },
        "size": {
            "type": "minecraft:uniform",
            "min_inclusive": 4,
            "max_inclusive": 7
        },
        "rim_size": {
            "type": "minecraft:uniform",
            "min_inclusive": 1,
            "max_inclusive": 3
        }
    }
}