It's really showing how to request a resource and act on its becoming
available. The use of XML to do so is incidental; the use of
networking is central.
Pick-to: 6.6 6.5
Task-number: QTBUG-111228
Change-Id: Ibcf438c7ef3b2464ddfa8b96a79fb15523e4a468
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>