CheckableHandlerHolder

fun <I : O, O : State> CheckableHandlerHolder(    inputKlass: KClass<I>,     strict: Boolean = false,     delegateTo: StatesHandler<I, O>): CustomizableHandlerHolder<O, O>
inline fun <I : O, O : State> CheckableHandlerHolder(strict: Boolean = false, delegateTo: StatesHandler<I, O>): CustomizableHandlerHolder<O, O>