Where would you put a "maybe_return_to" helper ?

Hi everyone,

I want to achieve a flow similar to the require_authenticated_user from phx.gen.auth: a page requires some user info and if it is missing, we redirect to a form so they can be provided.

I think it makes sense to reuse the maybe_return_to functions defined in user_auth.ex, but I fail to see where I am supposed to put such general purpose helpers, so I’m turning to you for advice.