(define-method (hive-register-actor! (hive <hive>) (actor <actor>))
(hash-set! (hive-actor-registry hive) (actor-id actor) actor))
(define-method (hive-register-actor! (hive <hive>) (actor <actor>))
(hash-set! (hive-actor-registry hive) (actor-id actor) actor))