The title of the document. Free text for the user. Generally contains the page or attachment name
and its version, if any.
Optional. Generally set after we've retrieved the reference.
The URL. Must contain the contextPath if it is relatived. Can also be absolute.
We've changed in 2.3, we used to add the contextPath() when displaying this url, but the external integrations
made us remove it, so we require a URL that can stand on its own.
Optional. Generally set after we've retrieved the reference.