I’d like to be able to pass a getter/setter reference to @Mapping instead of strings. The thing is that with Strings we can use IDE features like "Go To Declaration".
I'd like to use Mapstruct this way:

@Mapper
public interface MovieMapper {

     @Mapping( target = my.example.setTitle(), source= their.demo.getTitle())
     GermanRelease toGerman( OriginalRelease movies );
}

Instead of:

@Mapper
public interface MovieMapper {

     @Mapping( target = "title", source= "title")
     GermanRelease toGerman( OriginalRelease movies );
}

In many cases, we won't even need to specify the group, but even when specifying the group for every field, I'm sure lots of people will be glad to use Mapstruct this way.