it was always a broken API because it includes the code, the class, and
only part of the subsystemarea.

Change-Id: I6f88b54aed2feab02a6aeaa783d7c642054b8075
Reviewed-on: https://gerrit.libreoffice.org/51430Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>