xml/tests/testData/xml/DtdElementRefs.xml

<?xml version="1.0"?>
<!DOCTYPE persistence [
  <!ELEMENT persistence (xi:include)*>
  <!ELEMENT persistence (<error>xi:include2</error>)*>
  <!ATTLIST persistence
    xmlns CDATA #REQUIRED
    xmlns:xsi CDATA #REQUIRED
    xmlns:xi CDATA #REQUIRED
    xsi:schemaLocation CDATA #REQUIRED>
  <!ELEMENT xi:include (#PCDATA)>
  <!ATTLIST xi:include
    href CDATA #REQUIRED>
  ]>
<persistence xmlns="http://example.com/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:xi="http://www.w3.org/2001/XInclude"
             xsi:schemaLocation="http://example.com/persistence XIncludeTestSchema.xsd
             http://www.w3.org/2001/XInclude http://www.w3.org/2001/XInclude.xsd">
  <xi:include href="<error>sample-inc.xml</error>"/>
</persistence>