{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "media",
  "title": "media",
  "description": "Base media definitions",
  "definitions": {
    "image": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "ref": {
          "type": ["string", "null"],
          "maxLength": 2000
        }
      }
    }
  }
}