bergie/phpcr-odm — comment on commit ae5c19f50349b35d20a3447345d0c820572f0d64
File: lib/Doctrine/ODM/PHPCR/Document/File.php line 183
By bergie:

Yep, seems a mismatch between JCR 1 and 2. In JCR 1 [this was mandatory](http://wiki.apache.org/jackrabbit/nt%3Aresource), in JCR 2 it isn't