if (!productCost) productCost = 0;
        if (!inventoryCode) inventoryCode = "none";
        if (!inventoryQuantity) inventoryQuantity = 0;
        productPart = productPart.splice(-1);

        if (productName && productSKU && productPart && processDependency) {
          if (this.imageURL) {
            this._debouncer = Polymer.Debouncer.debounce(this._debouncer,
              Polymer.Async.timeOut.after(3000), () => {
                imageURL = this.imageURL;
                this._updateProduct(timest