This new property is available since 5.2, not 5.1. Change-Id: Ie3b5cd3c5d909f6d4ba662a2eaf03f1e6bb8b21b Reviewed-by: Tobias Koenig <tobias.koenig.qnx@kdab.com> Reviewed-by: Lars Knoll <lars.knoll@digia.com> Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>