Web dynpro file upload in ABAP

Hello experts, i was watching a "HOW TO"...

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/202a850a-58e0-2910-eeb3-bfc3e081257f

This about uploading and downloading files in JAVA webdynpro.

My question is if some one knows about a similar "HOW TO" but for ABAP

Thanks.