Worldgen for 512 build height

{
  "bonus_chest": false,
  "dimensions": {
    "minecraft:overworld": {
      "type": {
	    "name": "minecraft:overworld",
	    "ultrawarm": false,
		"natural": true,
		"coordinate_scale": 1,
		"has_skylight": true,
		"has_ceiling": false,
		"ambient_light": 0.5,
		"piglin_safe": true,
		"bed_works": true,
		"respawn_anchor_works": false,
		"has_raids": true,
		"logical_height": 255,
		"height": 512,
		"min_y": 0,
		"infiniburn": "minecraft:infiniburn_overworld",
		"effects": "minecraft:overworld"
    },
      "generator": {
        "biome_source": {
          "seed": 8440727231298719466,
          "large_biomes": false,
          "type": "minecraft:vanilla_layered"
        },
	   "generator": {
	     "height": 2048
		},
        "seed": 8440727231298719466,
        "settings": "minecraft:overworld",
        "type": "minecraft:noise"

      }
    },
    "minecraft:the_nether": {
      "type": "minecraft:the_nether",
      "generator": {
        "biome_source": {
          "preset": "minecraft:nether",
          "seed": 8440727231298719466,
          "type": "minecraft:multi_noise"
        },
        "seed": 8440727231298719466,
        "settings": "minecraft:nether",
        "type": "minecraft:noise"
      }
    },
    "minecraft:the_end": {
      "type": "minecraft:the_end",
      "generator": {
        "biome_source": {
          "seed": 8440727231298719466,
          "type": "minecraft:the_end"
        },
        "seed": 8440727231298719466,
        "settings": "minecraft:end",
        "type": "minecraft:noise"
      }
    }
  },
  "seed": 8440727231298719466,
  "generate_features": true
}