what is the purpose of this? is this not redundant with how one normally configures admin extensions? http://sonata-project.org/bundles/admin/master/doc/reference/extensions.html#configuration

or is the idea that this bundle registers itself to the extensions? to me having to add the extension manually would make sense, its much easier and more visible what will be translated. i can also use the exclude mechanisms and all that, or use a document that is translatable but implements neither interface.