That's a great question! So content here is explained a smidge in the docs:
? set_image_url
set_image_path package:connectapi R Documentation
Set the Image from a Path
Description:
*[Experimental]*
Usage:
set_image_path(content, path)
set_image_url(content, url)
Arguments:
content: A content object
The easiest way to create a "content" object is by content_item(client, "my-guid")
If there are things we can clean up in the docs here, issues / PRs / suggestions are most welcome!