PE 2015.3 new auth.conf but where's the updated doc ?

Hi, i noticed, after upgrading, that the auth.cong file changed.
So, i wanted to migrate my custom auth.conf but didn't find any updated documentation.
The location should be: [https://docs.puppetlabs.com/puppet/4.3/reference/config_file_auth.html](https://docs.puppetlabs.com/puppet/4.3/reference/config_file_auth.html),
but no new auth.conf directived but the old version explained.
Since the new version is in JSON format, can i use the old parameters and convert it to JSON ?
I have a huge load of regex so please tell me how to do it.
Rgds.
Franz