{
  "properties": {
    "bothOptional": {
      "type": "number"
    },
    "optionalFlag": {
      "type": "string"
    },
    "required": {
      "type": "string"
    },
    "unionUndefined": {
      "type": "string"
    }
  },
  "required": [
    "required"
  ],
  "type": "object"
}