Request: Slider listener/callback using lambdas

I think that is a good request,
right now I’m working on a project where the only “elegant” (not obscure) solution that comes to my mind is using lambdas.

So, is there any plans to this feature?

what are you trying to do that’s different than the slider listener class?

I wanted to do something like SlideAttachment,
I was solved using Listeners inside the “Attachment” class, works fine.