On my personal website, I have a photo of myself which was taken by a designer I once worked with. I would like to attribute her as the author of the photo using metadata, but if possible I would like to avoid adding visible elements to support this microdata. (I could use extra spans, etc, to hold text content; I could use a figure
for this, perhaps, but I don't think that's the best way to do this.)
I've looked at schema.org, but it doesn't look as though there's an obvious way to add an author attribution without adding subelements to a parent element. How can I accomplish this?