public void MultipleSetPermission(IEnumerable <int> contentIds, int?userId, int?groupId, int permissionLevel)
 {
     ContentPermissionHelper.MultipleSetPermission(contentIds.ToList(), userId, groupId, permissionLevel);
 }
 public IEnumerable <int> FilterNoPermissionContent(IEnumerable <int> relatedContentId, int?userId, int?groupId)
 => ContentPermissionHelper.FilterNoPermissionContent(relatedContentId.ToList(), userId, groupId);