{
  "type": "minecraft:cache_once",
  "argument": {
    "type": "minecraft:range_choice",
    "input": "angel_islands:ridges/levels",
    "min_inclusive": 0,
    "max_exclusive": 1,
    "when_in_range": "angel_islands:ridges/no_rivers",
    "when_out_of_range": "angel_islands:ridges/noise"
  }
}
