Finding the size of xdg-apps

[Richard Hughes]

Hi,

I need to find the size of an xdg-app application or runtime. In GNOME
Software we usually show the download size for not-yet-installed
applications and the size-on-disk for installed apps, and I'm
wondering what xdg-app can provide in this regard. We normally round
up to the nearest Mb, so it really doesn't have to be that accurate at
all. Thanks!

Richard.