Suppose I have: ```annotation class MyAnnotation(val someValue: String, val optionalClass: KClass&lt...

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[Patrik Åkerfeldt]

Suppose I have:

annotation class MyAnnotation(val someValue: String, val optionalClass: KClass<*> = MyDefaultImplementation::class)

interface MyInterface {
    fun doSomething(input: Any?): Any?
}

class MyDefaultImplementation: MyInterface {
    override fun doSomething(input: Any?): Any? = input.toString()
}

How can I set a bound on optionalClass to make sure only a class which implements MyInterface is provided?

[Edgars]

val optionalClass: KClass<out MyInterface> should work.

[Patrik Åkerfeldt]

Ah yes, thank you!