<?xml version="1.0"?>
<D:propertyupdate xmlns:D="http://www.ietf.org/standards/dav/" xmlns:Z="http://www.w3.com/standards/z39.50/">
  <D:set>
    <D:prop>
      <Z:authors>
        <Z:Author>Jim Whitehead</Z:Author>
        <Z:Author>Roy Fielding</Z:Author>
      </Z:authors>
    </D:prop>
  </D:set>
  <D:remove>
    <D:prop>
      <Z:Copyright-Owner/>
    </D:prop>
  </D:remove>
</D:propertyupdate>