Find a way to override the Jersey built-in File MessageBodyReader implementation.

[Foxcapades]

Presently, if the type of the entity parameter taken by the controller method is File, then our MultipartMessageBodyReader implementation is ignored in favor of the Jersey built-in that handles File types.

The Jersey built-in does not parse the incoming request body and instead writes the entirety of it to a temp file which is passed to the controller method.