{
  "type": "object",
  "required": [
    "status",
    "environment"
  ],
  "properties": {
    "status": {
      "oneOf": [
        {
          "type": "string",
          "enum": [
            "last",
            "creating",
            "failed",
            "out_of_date"
          ]
        },
        { "type": "null" }
      ]
    },
    "environment": { "$ref": "../environment.json" }
  },
  "additionalProperties": false
}