<bar:Something xmlns:bar="http://example.org/bar" xml:lang="en-ie">
      xmlns:foo="http://example.org/foo"
        <bar:Something xml:lang="en-ie">
            xmlns:foo="http://example.org/foo"
             <baz:Something xmlns:baz="http://example.org/baz" xml:lang="en-ie"></baz:Something>
           
        </bar:Something>
     
  </bar:Something>