document how to get the data of a file downloaded with "filesDownload(args)"

[wiki-me]

Why is this feature valuable to you? Does it solve a problem you're having? It's hard to tell how to do that, first i could not have known if that was even possible if i haven't looked at the HTTP Api documentation, i have to poke around the source code (which toke a while), to figure out what was happening.

Describe the solution you'd like document how to get the file data.

Describe alternatives you've considered document that the javascript API documentation is incomplete, instead have a link to the HTTP Api docs which seems much better.

[greg-db]

Thanks for sharing! I'll ask the team to improve the documentation accordingly.