moxy/eclipselink.moxy.test/resource/org/eclipse/persistence/testing/jaxb/xmlelement/employee_nillable.xml

<employee>
    <employee xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
    <employees xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
    <string xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
    <strings xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
</employee>