Link* link_by_name(const std::string& name) const;
Link* link_by_name_or_null(const std::string& name) const;
+ Mailbox* mailbox_by_name_or_create(const std::string& name) const;
+
size_t get_actor_count() const;
std::vector<ActorPtr> get_all_actors() const;
std::vector<ActorPtr> get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const;