Is it possible to configure a system-wide KDE Plasma wallpaper?

With GNOME you can easily do this by creating a keyfile: https://help.gnome.org/admin/system-admin-guide/stable/dconf-keyfiles.html.en

Is there something similar in KDE? I've looked at the Kiosk documentation, but didn't find anything about setting a system-wide default background (like in an enterprise deployment).

@kde