{
  "ae2:ingredients": {
    "type": "custom_object",
    "keys": [
      {
        "name": "top",
        "component": "optional_ingredient",
        "optional": true
      },
      {
        "name": "middle",
        "component": "ingredient"
      },
      {
        "name": "bottom",
        "component": "optional_ingredient",
        "optional": true
      }
    ]
  }
}
