OIDC modifiers documentation

Hello, per the docs noted here:
OpenID Connect Authenticator (XWiki.org)

There is a section that reads:

#-# The following suffixes can be added:
#-# * "._lowerCase": the lower case version of the string
#-# * "._upperCase": the upper case version of the string 
#-# * "._clean": a version of the string stripped from ".", ":", ",", "@", "^" characters and "\s" (all forms of white spaces).
#-#             It can itself be suffixed with "._lowerCase" and "._upperCase".

Is there any source of documentation for other suffixes? Say I want to TitleCase the names, or other possible features.

Thanks,

That documentation contains them all, so no other suffixes currently.

If you would like to contribute some others, the current code is on oidc/oidc-authenticator/src/main/java/org/xwiki/contrib/oidc/auth/internal/OIDCUserManager.java at master · xwiki-contrib/oidc · GitHub. But if we start adding a lot of those, we will probably need a more advanced implementation to scale a bit better.

Thanks! You saved me countless hours searching online haha.