Location of translations for package description

[c.buhtz@posteo.jp]

Hello,

there is a German package description
https://packages.debian.org/de/bookworm/backintime-common

this is also available in English
https://packages.debian.org/en/bookworm/backintime-common

It seems to me that the English version is extracted from the control 
file
https://salsa.debian.org/jmw/pkg-backintime/-/blob/debian/debian/control

But I'm not able to find the German (or any other translated) version in 
the source repo.

Is this done on the fly in the back somehow?

btw: I'm upstream maintainer of that package.

Kind
Christian Buhtz