vendor/github.com/go-openapi/spec/fixtures/local_expansion/item.json

{
  "properties": {
    "id": {
      "format": "int64",
      "readOnly": true,
      "type": "integer"
    },
    "title": {
      "maxLength": 80,
      "minLength": 2,
      "type": "string"
    }
  },
  "required": [
    "title"
  ],
  "type": "object"
}