Way to enable GVFS?

Hi,
I'm trying to access Google Drive from the Emacs flatpak. It should work directly with `M-x find-file` by the builtin [Tramp](https://www.gnu.org/software/emacs/manual/html_node/tramp/Quick-Start-Guide.html). But I get "Package `tramp-gvfs' not supported". After looking at permissions of other flatpaks like [FreeFileSync](https://github.com/flathub/org.freefilesync.FreeFileSync) I tried:

flatpak run --filesystem=xdg-run/gvfs --talk-name=org.gtk.vfs --talk-name=org.gtk.vfs.* org.gnu.emacs

But I still get the "not supported" message. Is there any way around this?