verify that parameters on override methods have the same set of default
values for their params as their parent/super-methods do.

Change-Id: Ibdbc1c6e417fbaa680ea025a6bbf5ba9c2e5bcd2
Reviewed-on: https://gerrit.libreoffice.org/27437Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>