The title of the PR does not describe at all what it does...

What it does is adding return types to the generated guard authenticators (for forward-compatibility with Symfony 5)

Thank you @stof for the explanation.
I have mixed feelings about what to do.

Purely regarding Symfony, return types won't be enforced in 5.0 (see symfony/symfony#33236) and deprecation warnings may start in 5.1, but I'm not totally sure if they will match this PR (for instance, UserInterface does not have any return types at the moment). So there's no rush there.

If we look at this purely from a CS perspective, having return types is nice - as long as Symfony interfaces does not break those later (6.x ?).

What do you think?
Anyhow, @LeJeanbono could you please edit PR title (something like "Added return types"), get rid of the merge commit and squash it?

Are we ok @romaricdrigon ?

Closing as MakerBundle does not support Guard Authentication anymore. Types have been gradually added in w/ the new security system. Thanks for the work on this @LeJeanbono - I wish we could have gotten to this sooner!

You're welcome !!