This was (and is) unused. All attachment element clients use file wrappers via `_WKAttachment` instead.
Created attachment 426342 [details] Patch
Created attachment 426344 [details] Rebase on trunk
Created attachment 426347 [details] Patch
Created attachment 426348 [details] Fix iOS build
Created attachment 426356 [details] Fix iOS API test
Comment on attachment 426356 [details] Fix iOS API test Thanks for the review!
Committed r276219 (236701@main): <https://commits.webkit.org/236701@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 426356 [details].
<rdar://problem/77110076>