ANT_17_BRANCH/src/etc/testcases/taskdefs/xmlproperty/inputs/override.xml

<root>
  <override>
    <!-- This property should not get set.  The
         XmlPropertyTest code explicitly sets
         override.property.test to foo to make
         sure that attempts to reset it via
         property file loads *fail*. -->
    <property test="bar"/>
  </override>
</root>