{
  "multipart": [
    {
      "apply": {
        "model": "twilightforest:block/twilight_portal"
      }
    },
    {
      "when": {
        "is_one_way": "true"
      },
      "apply": {
        "model": "twilightforest:block/twilight_portal_barrier"
      }
    }
  ]
}