class Response<D> {
  List<D> data;
}

types:
  Response:
    type: object
    properties:
      data: object[]

body:
  type: Response
    properties:
      data: MyDataType[]

types:
  Response:
    type: object
    properties:
      data: object
      repeat: true

body:
  type: Response
    properties:
      data: MyDataType
      repeat: true