{
  "properties": {
    "prop1": {
      "title": "sub property title in base.json"
    },
    "prop2": {
      "__reference__": {},
      "title": "sub property title in base.json"
    },
    "prop3": {
      "__reference__": {},
      "properties": {
        "prop1": {
          "title": "sub property title in other.json"
        },
        "prop2": {
          "__reference__": {},
          "title": "sub property title in other.json"
        }
      },
      "title": "title from url"
    },
    "prop4": {
      "__reference__": {},
      "title": "sub property title in other.json"
    },
    "prop5": {
      "__reference__": {},
      "title": "sub property title in other.json"
    }
  },
  "title": "title from file"
}