since
    commit c714b43b
    Date:   Mon Jul 20 13:12:31 2015 +0200
    loplugin:unusedmethods oox

Change-Id: Ibece5543b2012bd5a18d82058faa8554ed155777
Reviewed-on: https://gerrit.libreoffice.org/42835Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>