Added new extension elements to the Faces XML schema. Please see Section 1.1 "XML Schema Definition".
Also see https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=54
as long as we don't need these extensions there is no need to implement them.
I don't think marking this as resolved is the right resolution.
I'd suggest we leave it open at minimal priority.
Low priority new feature – no plans to implement in the near future.