public string AddOrUpdateItem(TData item, ItemInsertMode mode)
{
string idValue = myType.GetProperty(idPropertyName).GetValue(item) as string;
if (idValue == null)
{
idValue = myType.GetProperty(idPropertyName).GetValue(item).ToString();
}
var res = this.Api.ApiV2DatasetyDatasetItemUpdate(this.DatasetId, idValue, item, mode.ToString());
return(res.Id);
}