[MM3-users] How to list all nonmembers from a list?

Hey there, I wanted to list all nonmembers from a list, I just can't find an easy way to do it.

For listing members of a list it is quite clear: mailman members $mylist

Is there a similar way for nonmembers!? Actually I'm pretty sure, that one can do it with the shell and I found some documentation on that. But I'm kind of a noob in these things and already tried a little around, but can't get anything to work: dump_members(mlist.nonmembers.members) from https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/model/docs/...

Help qould be highly appreciated, thanks in advance! Jens.