to make the call-sites less verbose

Change-Id: Ifddcbb03a454a241bef93f31a8025801b84a66fc
Reviewed-on: https://gerrit.libreoffice.org/50578Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>