https://github.com/marshmallow-code/flask-smorest/issues/727
https://github.com/marshmallow-code/flask-smorest/issues/728
https://cubecobra.com/cube/overview/c405d033-1288-4554-851e-2966699eb693
https://cubecobra.com/cube/overview/790b4146-10c5-4f38-bb93-3f4fa448eb9f
https://cubecobra.com/cube/overview/6eba6b8e-97d0-4f03-9bcb-8dbb654b36bb