private void ExtractProducts(NodeContent parent, IExtractedContentHandler contentHandler)
 {
     foreach (var product in BatchedChildren <ProductContent>(parent.ContentLink))
     {
         contentHandler.OnProductContent(parent, product);
     }
 }
        public void OnProductContent(NodeContent parent, ProductContent product)
        {
            _contentHandler.OnProductContent(parent, product);

            _productExportCounter++;
            UpdateStatus();
        }