Michał Kowol

After this change, Kafka works perfectly on Apple Macbook Pro M1. Great work @mmohamed :)

@filiphr I would love to contribute to this project 🙂 Could you please let me know if `Optional` should be done similar to `Iterable`? * `org.mapstruct.ap.internal.model.IterableMappingMethod` * `processor/src/main/resources/org/mapstruct/ap/internal/model/IterableMappingMethod.ftl`