transition
inline fun <E : Event> TransitionStateApi.transitionOn(name: String? = null, block: UnitGuardedTransitionOnBuilder<E>.() -> Unit): Transition<E>
This is more powerful version of transition function. Here target state is a lambda which returns desired State. This allows to use lateinit state variables for recursively depending states and choose target state depending on application business logic.
This is a special kind of conditional transition but with simpler syntax and less flexibility.