/usr/share/bash-completion/completions/adios is in libadios-bin 1.9.0-7build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | # Simple bash completions for libadios-bin
# Alastair McKinstry, <mckinstry@debian.org>, 2014-05-21
complete -W "-d -c -l -f -r -s -v" -f adios_config
|