CAP JAVA: CDS service with $batch requires authentication

[christoffer_fuss]

Hello,

I have a CAP JAVA application where I defined a service with public entities and protected entities with requires annotation like this:

I can consume all my public entities without authentication. 
But the $batch request gives a 401 error and requires authentication.
How can I make the $batch public as well with requires annotation?
I tried with spring security config:

This makes the $batch public but then I cannot get the authentication info of logged in users, so 

userInfo.isAuthenticated() is always false (also for logged in users).

What is the best way to solve this?

Best regards and many thanks,

Chris