Document actual type in docblock (#1631)
Document actual type in docblock (#1631)

This will make SA tools happier.
hug963/SonataMediaBundle,hug963/SonataMediaBundle,OskarStark/SonataMediaBundle,OskarStark/SonataMediaBundle,sonata-project/SonataMediaBundle,hug963/SonataMediaBundle,jerome-fix/SonataMediaBundle,OskarStark/SonataMediaBundle,jerome-fix/SonataMediaBundle,hug963/SonataMediaBundle,hug963/SonataMediaBundle,jerome-fix/SonataMediaBundle,jerome-fix/SonataMediaBundle,OskarStark/SonataMediaBundle