mbruzek@warhorse:/etc/bash_completion.d$ apt-file juju2 
The program 'apt-file' is currently not installed. You can install it by typing:
sudo apt install apt-file
mbruzek@warhorse:/etc/bash_completion.d$ dpkg -S juju2
juju2: /etc/bash_completion.d/juju2
mbruzek@warhorse:/etc/bash_completion.d$ dpkg -S juju-core
juju-core: /usr/share/lintian/overrides/juju-core
juju-core: /usr/share/doc/juju-core
juju-core: /usr/share/doc/juju-core/copyright
juju-core: /etc/bash_completion.d/juju-core
juju-core: /usr/share/doc/juju-core/NEWS.Debian.gz
juju-core: /usr/share/doc/juju-core/changelog.Debian.gz
juju-core2: /etc/bash_completion.d/juju-core2
mbruzek@warhorse:/etc/bash_completion.d$ dpkg -S juju-core2
juju-core2: /etc/bash_completion.d/juju-core2