usenet downloads

Changes to Async Create Usenet Download

post/v1/api/usenet/asynccreateusenetdownload

Jun 22, 20264ef25276ebb3 Revision changes
- breaking
  the / request property contentMediaType changed from to application/octet-stream
- info
  the / request property format was generalized from binary to no format
- info
  added the optional property // to the response with the status
- info
  added the optional property // to the response with the status