[whatwg/dom] What does adoptNode() return for DocumentFragment? (#813)

#754 adds to [`adoptNode()`](https://dom.spec.whatwg.org/#dom-document-adoptnode):

> 3. If _node_ is a `DocumentFragment` node whose host is non-null, then return.

But `adoptNode()` must return a `Node`. What does this "return" mean?

@annevk 

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/whatwg/dom/issues/813