changed getExtension() visibility
changed getExtension() visibility

vyshkant/SonataMediaBundle,nicolasricci/SonataMediaBundle,jerome-fix/SonataMediaBundle,OskarStark/SonataMediaBundle,OskarStark/SonataMediaBundle,sonata-project/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,rmzamora/SonataMediaBundle,jerome-fix/SonataMediaBundle,bgaleotti/SonataMediaBundle,hug963/SonataMediaBundle,bgaleotti/SonataMediaBundle,bgaleotti/SonataMediaBundle,hug963/SonataMediaBundle,nicolasricci/SonataMediaBundle,rmzamora/SonataMediaBundle,vyshkant/SonataMediaBundle,OskarStark/SonataMediaBundle,vyshkant/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,hug963/SonataMediaBundle,hug963/SonataMediaBundle,peterkokot/SonataMediaBundle,OskarStark/SonataMediaBundle,vyshkant/SonataMediaBundle,Soullivaneuh/SonataMediaBundle,nicolasricci/SonataMediaBundle,peterkokot/SonataMediaBundle,bgaleotti/SonataMediaBundle,rmzamora/SonataMediaBundle,vyshkant/SonataMediaBundle,hug963/SonataMediaBundle,peterkokot/SonataMediaBundle,jerome-fix/SonataMediaBundle,nicolasricci/SonataMediaBundle,nicolasricci/SonataMediaBundle,jerome-fix/SonataMediaBundle