{
  "dimensions": {
    "minecraft:overworld": {
      "type": "minecraft:overworld",
      "generator": {
        "type": "minecraft:noise",
        "biome_source": {
          "type": "minecraft:fixed",
          "biome": "minecraft:plains"
        },
        "settings": "minecraft:overworld"
      }
    },
    "minecraft:the_end": {
      "type": "minecraft:the_end",
      "generator": {
        "type": "minecraft:noise",
        "biome_source": {
          "type": "minecraft:the_end"
        },
        "settings": "minecraft:end"
      }
    },
    "minecraft:the_nether": {
      "type": "minecraft:the_nether",
      "generator": {
        "type": "minecraft:noise",
        "biome_source": {
          "type": "minecraft:multi_noise",
          "preset": "minecraft:nether"
        },
        "settings": "minecraft:nether"
      }
    }
  }
}