How to create a Hello World route?

[ndoktoruser]

Hello!

Is there any tutorial teaching how to create a "hello world" route/page?

I would like to create a simple page to display "hello world" or output a json file.

As far as I could research, to create a new page (for example "/forum/newpage"), I would need a new entry in the file /core/includes/xml/vbulletin-routes.xml and a new class /core/vb5/route/newroute.php extending vB5_Route, but I still did not succeed.

Any existent topic or tutorial?

Thanks in advance!