code: function enhancedEcommerceTrackProduct(track) {
    var props = track.properties();
  
    window.ga('ec:addProduct', {
      id: track.id() || track.sku(),
      name: track.name(),
      category: track.category(),
      quantity: track.quantity(),
      price: track.price(),
      brand: props.brand,
      variant: props.variant,
      currency: track.currency()
    });
  }
docs: Enhanced ecommerce track product.
  
  Simple helper so that we don't repeat `ec:addProduct` everywhere.
  
  @api private
  @param {Track} track