Or perhaps we need a utility method and pointer to that?
That's a little bit out of scope. I was thinking about that, too, but there are too many different ways to parse XML (Stax, DocumentBuilder), so I did not do this. The new Resolver and Logging classes already handle those interface implementations for all types of parsing, just initializing the parsers should be in the caller's responsibility. Also XSL is different, so all of them use ResourceLoader, but their code is different.
It is just important that you just not use the standard copy-paste from XML howtos. A similar code example like above can be shown for Stax and Transformers/Templates. I see no need to make helper classes.
I will add to wiki later.