code: func (h *Client) ProductImpressionBrand(productImpressionBrand string) *Client {
  	h.productImpressionBrand = productImpressionBrand
  	h.productImpressionBrandSet = true
  	return h
  }
docs: // The brand associated with the product. Impression List index
  // must be a positive integer between 1 and 200, inclusive.
  // Product index must be a positive integer between 1 and 200,
  // inclusive. For analytics.js the Enhanced Ecommerce plugin
  // must be installed before using this field.