Message type which is sent directly to the subscribed actor in
akka.actor.FSM.SubscribeTransitionCallBack before sending any
akka.actor.FSM.Transition messages.
This member is added by an implicit conversion from CurrentState[S] to
any2stringadd[CurrentState[S]] performed by method any2stringadd in scala.Predef.
Message type which is sent directly to the subscribed actor in akka.actor.FSM.SubscribeTransitionCallBack before sending any akka.actor.FSM.Transition messages.