@NonNull should be allowed on abstract methods

[cristian-mocanu-mob]

Lombok throws an error when using @NonNull on abstract method (in abstract class or interface): @NonNull is meaningless on a parameter of an abstract method.

@NonNull not meaningless in this situation.
It is actually very useful for documentation purposes.

Also, to keep things easy to understand, probably Lombok should require @NonNull for implementations of these methods (even for abstract overrides - e.g. add a throws declaration in a subclass).

[rspilker]

Already fixed in issue #807 and available in the edge release