Does xdg-desktop-portal-xfce exist, or should it exist?

There are several xdg-desktop-portal-{desktop-environment} projects, for example xdg-desktop-portal-gtk.

Some software, like Pipewire, interacts with xdg-desktop-portal-{xx}. Should xdg-desktop-portal-xfce exist? Does it exist? Or is xdg-desktop-portal-gtk sufficient for XFCE4?