static long expended_states_; /* Count total amount of states, for stats */
/**
- * Outgoing transition: what was the last transition that we took to leave this state?
- * The owner of the transition is the ActorState instance which exists in the State
- * object from which this state is derived, or nullptr if the state represents the root
+ * @brief The outgoing transition: what was the last transition that
+ * we took to leave this state?
+ *
+ * The owner of the transition is the `ActorState` instance which exists in this state,
+ * or nullptr if the state represents the root
*/
Transition* transition_ = nullptr;
