namespace in response

Hi,

in
http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.html#rfc
.section.2.4.2 the namespace of the query (F="http://example.com/foo") is
referenced in the response but never used.

Is it really necessary to return that namespace?


43 >> Request: 
SEARCH / HTTP/1.1
Host: ryu.com
Content-Type: application/xml
Content-Length: xxx

<?xml version="1.0" encoding="UTF-8"?>
<D:searchrequest xmlns:D="DAV:" xmlns:F="http://example.com/foo">
  <F:natural-language-query>
    Find the locations of good Thai restaurants in Los Angeles
  </F:natural-language-query>
</D:searchrequest>

44 >> Response: 
HTTP/1.1 207 Multi-Status
Content-Type: text/xml; charset="utf-8"
Content-Length: xxx

<?xml version="1.0" encoding="UTF-8"?>
<D:multistatus xmlns:D="DAV:" xmlns:F="http://example.com/foo"
  xmlns:R="http://ryu.com/propschema">
  <D:response>
    <D:href>http://siamiam.com/</D:href>
    <D:propstat>
      <D:prop>
        <R:location>259 W. Hollywood</R:location>
        <R:rating><R:stars>4</R:stars></R:rating>
      </D:prop>
    </D:propstat>
  </D:response>
</D:multistatus>

Best regards,
Martin Wallmer
Research & Development
Software AG
Uhlandstr. 12
D 64297 Darmstadt