{
  "type": "object",
  "required": [
    "id",
    "title",
    "description",
    "state",
    "iid",
    "created_at",
    "due_date",
    "issues"
  ],
  "properties": {
    "id": { "type": "integer" },
    "title": { "type": "string" },
    "description": { "type": ["string", "null"] },
    "state": { "type": "string" },
    "iid": { "type": "integer" },
    "created_at": { "type": "string" },
    "due_date": { "type": ["string", "null"] },
    "issues": {
      "type": "array",
      "items": { "$ref": "issue.json" }
    }
  },
  "additionalProperties": false
}