{
  "feature": "minecraft:glowstone_extra",
  "placement": [
    {
      "type": "count",
      "count": 2
    },
    {
      "count": {
        "type": "minecraft:biased_to_bottom",
        "value": {
          "min_inclusive": 0,
          "max_inclusive": 9
        }
      },
      "type": "minecraft:count"
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "height": {
        "min_inclusive": {
          "above_bottom": 4
        },
        "max_inclusive": {
          "below_top": 4
        },
        "type": "minecraft:uniform"
      },
      "type": "minecraft:height_range"
    },
    {
      "type": "minecraft:biome"
    }
  ]
}
