'CreativeCommons\Feed' => Extension\CreativeCommons\Feed::class,
'DublinCore\Entry' => Extension\DublinCore\Entry::class,
'DublinCore\Feed' => Extension\DublinCore\Feed::class,
'CreativeCommons\Feed' => Extension\CreativeCommons\Feed::class,
'DublinCore\Entry' => Extension\DublinCore\Entry::class,
'DublinCore\Feed' => Extension\DublinCore\Feed::class,