getObjects method
This request will give us every object that's a VCALENDAR object, and its etag.
Implementation
Future<CalResponse> getObjects(String path, {int? depth}) {
var body = //
'''<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
<d:prop>
<d:getetag />
<c:calendar-data />
</d:prop>
<c:filter>
<c:comp-filter name="VCALENDAR" />
</c:filter>
</c:calendar-query>''';
return report(path, body, depth: depth);
}