In the RPM world, debug symbols and the source code for a package are packaged in RPMs with names ending in debuginfo and debugsource respectively. These can be downloaded using the dnf debuginfo-install command.
In what kind of package will the symbols and the source code be found on a Debian derived system?
Where are these debug packages hosted if not in the main package archives, and what command is used to download and install them if not "apt install"?