private static RenameResult RenameId(IIDPropertiesProvider obj, string propertyName, List <string> ids) { RenameResult result = new RenameResult(propertyName); string id = (string)PropertyPathHelper.GetValue(obj, propertyName); if (ids.Contains(id)) { string newId = IDUtils.NewGuid(); PropertyPathHelper.SetValue(obj, propertyName, newId); result.OldId = id; result.NewId = newId; return(result); } return(result); }