AN2 driver, nobody in germany has a level 4 german entry in his license. It is simply not possible to get it apart from those pilots registered within brandenburg (less than CPL only), even for those only since begin of june 2012. As there are no definitions for any language proficiency levels apart from english there is no way to test it and therefore no way to put it into a license.
There is a german radio operators license, however that is not a ICAO level 6 entry (level 6 since it is valid for life).