READ : Allow user to view this Message
CREATE : Allow user to create new resource below this Message
UPDATE : Allow user to edit this Message
DELETE : Allow user to delete this Message

Resource has permissions :	READ	CREATE	UPDATE	DELETE	Action
ls://dev.artenum.com/community/mathieu/private/editors					Edit -  Delete -  (recursive)
ls://dev.artenum.com/groups/manager					Edit -  Delete -  (recursive)
ls://dev.artenum.com/community/mathieu/private/lixam					Edit -  Delete -  (recursive)
ls://dev.artenum.com/community/reader					Edit -  Delete -  (recursive)
ls://dev.artenum.com/users/OlivierGuyetand					Edit -  Delete -  (recursive)

    (owner has all permissions)