can(what?) transfer(user?, user_group?) linkJoin(id) linkAccess(access?, expires?, type?, mailto?) setAccess(user?, user_group?, access?, expires?) leaveAccess() unsetAccess(user?, user_group?) byType(type, verbose?) getTypes(editable_only?, User__?) listAccesses(MetaObject__, User_Group__, minimum?, recursive?) listAccess(minimum?) listChildrenAccess()