Standard MIME type for a Draco File?

Hi,

I was wondering what the right way to designate a file as draco compressed on cloud storage. Would that be `Content-Encoding: draco` with `Content-Type: model/mesh` or would it be something more like `Content-Type: model/mesh+draco`? I've seen one website recommend `Content-Type: application/x.draco` but that seems too informal for a relatively popular encoding type.

EDIT: Did some reading here: https://github.com/KhronosGroup/glTF/issues/412 Seems `model/mesh+draco` would probably not be allowed. At least `model/x.draco` would be an improvement over `application/x.draco`.

Thanks!