Kotlin DSL 'transformEvent' doesn't play nice with Java classes

[basdgrt]

Trying to apply transformEvent on a Java class results in an error.

Example:

val recipe = recipe("myRecipe") {
    interaction<JavaInteraction> {
        transformEvent<SomeJavaClass>(newName = "foo")
    }
}

Error:

java.lang.NullPointerException: Cannot invoke "scala.collection.mutable.Buffer.toArray(scala.reflect.ClassTag)" 
because the return value of "scala.collection.convert.AsScalaExtensions$ListHasAsScala.asScala()" is null