{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "definitions": {
    "pets": {
      "enum": [
        "cat",
        "dog",
        "parrot",
        "hamster"
      ],
      "type": "string"
    },
    "myType": {
      "required": [
        "dog"
      ],
      "type": "object",
      "properties": {
        "dog": {
          "type": "string"
        }
      }
    }
  }
}