Add getLocale to HippoDocumentBean (and Folder)

I couldn't find another way to check the language of a HippoDocumentBean than checking the HippoDocumentBean's path (ends with /hippotranslation:translations/[a-z]

).
Is it possible to add a getLocale?

http://hippo.2275632.n2.nabble.com/Checking-the-language-of-a-HippoDocumentBean-in-7-5-tp5983988p5983988.html