private void ThrowIfMissingModifyPermission(UserInfo userInfo, CustomList list)
 {
     if (!list.IsAllowedToModify(userInfo))
     {
         throw GetListPermissionException(ListErrorMessage.Permission.NoPermission_list, list.Name);
     }
 }
 private void CheckPermissionModify(UserInfo userInfo, CustomList list)
 {
     if (!list.IsAllowedToModify(userInfo))
     {
         throw GetListManagerException(ListErrorMessage.Permission.NoPermission_list, list.Name);
     }
 }