<?xml version="1.0" encoding="utf-8" ?>
<C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav">
    <D:prop xmlns:D="DAV:">
        <D:getetag/>
        <C:calendar-data/>
    </D:prop>
    <C:filter>
        <C:comp-filter name="VCALENDAR">
            <C:comp-filter name="VEVENT"/>
        </C:comp-filter>
    </C:filter>
</C:calendar-query>