public virtual IActionResult RelatedProductAddPopup(int productId)
        {
            if (!_permissionService.Authorize(StandardPermissionProvider.ManageProducts))
            {
                return(AccessDeniedView());
            }

            //prepare model
            var model = _productModelFactory.PrepareAddRelatedProductSearchModel(new AddRelatedProductSearchModel());

            return(View(model));
        }