This modification should not change anything logically.
Introduce a couple of methods (without using it) to identify
internal links, in terms of:
- anchors
- relative URLS
- absolute URLs that do not point to the internal base URI
https://we.phorge.it/T15182
Identifying these case could be useful to decide to apply
further logics in the future, out of the scope of this patch.
Closes D25082