Ion Auth - Lightweight Auth System based on Redux Auth 2

[eluser]JoeDRL[/eluser]
Is it me or I can't find a way to retrieve a user by it's username...?
I tried to use extra_where(array('username'=>$username)) followed by a get_user()but it sent me an error.

Am I doing things right?

Thanks a lot and very very good Auth system


EDIT: Sorry, it worked after putting get_users() instead of get_user().