And use an overloaded helper function with a better (?) unified name
to show that the result is not an O(U)String.
Change-Id: I8956338b05d02bf46a6185828130ea8ef145d46b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/141203
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
