h((error) => {
          this.toastText = 'Add Product failed.'
          this.$.toastAlert.open()
          console.error(error)
        })
      }

      _updateProduct(timestamp, productCost, productName, productSKU, inventoryCode, inventoryQuantity,
        productPart, productColor, imageURL) {
        this.$.productQuery.ref.child(this.productKey).update({
          add: timestamp,
          cost: productCost,
          name: productName,
          sku: productSKU,
          image: imageURL,
         