I didn't see that anyone requested this but I apologize if this request is a duplicate of an existing WISH.
It would be great if we could create classes in the B4R environment including the ability to create libraries similar to the features offered in B4A and B4J.
You can create code modules that act like classes.
Remember that hardware wise, arduino is somewhat limited and no UI is used...
Take a look at my WS3812B code (class ) module.