public virtual IActionResult RelatedProductAddPopupList(AddRelatedProductSearchModel searchModel)
        {
            if (!_permissionService.Authorize(StandardPermissionProvider.ManageProducts))
            {
                return(AccessDeniedKendoGridJson());
            }

            //prepare model
            var model = _productModelFactory.PrepareAddRelatedProductListModel(searchModel);

            return(Json(model));
        }