{
  "type": "minecraft:end_city",
  "biomes": "#minecraft:has_structure/end_city",
  "spawn_overrides": {
    "monster": {
      "bounding_box": "full",
      "spawns": [
        {
          "type": "minecraft:shulker",
          "maxCount": 1,
          "minCount": 1,
          "weight": 4
        }
      ]
    }
  },  "step": "surface_structures"
}