{
  "city": {
    "$ref": "definitions/city.json"
  },
  "patron": {
    "$ref": "definitions/patron.json"
  },
  "holds": {
    "$ref": "definitions/holds.json"
  },
  "hold": {
    "$ref": "definitions/hold.json"
  },
  "error": {
    "$ref": "definitions/error.json"
  }
}