<t:root xmlns:t="test"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="test test.xsd">

  <int-string-union/>
  <int-string-union> </int-string-union>
  <int-string-union>one</int-string-union>
  <int-string-union>1</int-string-union>

</t:root>
