in this case, we can just drop the child member and re-use the parent
member. The parent class barely contains any logic anyway.

Change-Id: I520217c04a38b66323a76bf5fddb476bd3fc8e15
Reviewed-on: https://gerrit.libreoffice.org/48551Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>