LXC completion doesn't work

Hi, folks
According to this link the lxc should have bash completion. Doesn’t seems so
https://documentation.ubuntu.com/lxd/en/stable-5.21/reference/manpages/lxc/completion/bash/

mastier@drakkar:~$ source <(lxc completion bash)
Error: unknown command "completion" for "lxc"
mastier@drakkar:~$ lxc --version
5.21.2 LTS

Please can you try 5.21/candidate channel and advise if this is working as we are shortly going to be pushing this to 5.21/stable. Thanks