How to pass Java class as parameter to Kotlin annotation?

Language Design
1

Dmitry explained how to pass Kotlin class to Kotlin function in (How to pass class parameter with Generics to function - #2 by yole). However, my problem is passing Java class to Kotlin annotation. What can I do to resolve this issue?

// src/main/kotlin/MapperScan.kt
annotation class MapperScan(
  val basePackages: Array<String> = arrayOf(),
  val factoryBean: KClass<out MapperFactoryBean<*>> = MapperFactoryBean::class
)

// src/main/kotlin/MapperFactoryBean.kt
open class MapperFactoryBean<T : Any> : SqlSessionDaoSupport, FactoryBean<T> {
}

// src/test/java/DummyMapperFactoryBean.java
class DummyMapperFactoryBean<T> extends MapperFactoryBean<T> {
}

// src/test/java/MapperScanTest.java
class MapperScanTest {
  @Configuration
  @MapperScan(basePackages = "org.mybatis.spring.mapper", factoryBean = DummyMapperFactoryBean.class)
  public static class AppConfigWithCustomMapperFactoryBean {
  }
}

Error message: Incompatible type.
Found 'java.lang.Class<DummyMapperFactoryBean>',
required 'java.lang.Class<? extends MapperFactoryBean<?>>'
2

Temporary fix this issue by using wildcard. It should allow only class extended from MapperFactoryBean. I wish Kotlin could read metadata from Java class and know that it’s already extends from MapperFactoryBean.

// src/main/kotlin/MapperScan.kt
annotation class MapperScan(
val basePackages: Array = arrayOf(),
val factoryBean: KClass<*> = MapperFactoryBean::class
)