{
    "tile_processors": [
        {
            "type": "reference",
            "id": "the_vault:treasure_rooms/treasure_rooms"
        },
        {
            "type": "weighted_target",
            "target": "the_vault:treasure_chest",
            "output": {
              "the_vault:treasure_chest[variant=present]": 1
            }
        }
    ]
}