An AddNinjaMessage is used by a Storefinder to require the addition of a Ninja actor.
An AddWarehousemanMessage is used by a Storefinder to require the addition of a Warehouseman actor.
A BecomeStorefinderNinjaMessage is used by a Usermanager who has just become a Storefinder to tell his ninjas to become StorefinderNinjas
Trait that every message that belongs to link operations has to extend.
A RemoveNinjaMessage is used by a Storefinder to require the removal of a Ninja actor.
A RemoveWarehousemanMessage is used by a Storefinder to require the removal of a Warehouseman actor.
LinkMessages are used to manage links between actors. These messages are used by actors to manage Actorbase structure, they are not directly related to user requests.