This is in preparation of also adding
a source file with default implementation
of some weld::Widget methods.
Change-Id: I5867cbaa108c74f01b381fc7256451245a0fc300
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/203189
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Michael Weghorn
47d28fc089