core/tests/org.hawk.integration.tests/resources/models/tree-xres/root.model

<?xml version="1.0" encoding="ASCII"?>
<Tree:Tree xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:Tree="Tree" xmi:id="_81n9IGjAEee8-on3BEZ1LQ" label="root">
  <children href="child.model#/" />
  <children label="abc"/>
</Tree:Tree>