Update: It seems like the primitive is always used. I guess I’ll just have to do the mapping myself

be careful, it is not always

boolean

especially when it is implementing another interface. e.g. you might have:

interface JavaInterface {
    void someBoolean(Boolean b)
}

class KotlinClass : JavaInterface {
    override fun someBoolean(b: Boolean)
}

actually "i think" it will genereate 2 methods in this case, not 100% sure

lovely