*/ public const BUSINESS_VERTICALS_IDS = array( 'flights' => 'destination', 'travel' => 'destination', ); /** * Name of the first-party cookie that carries GA4 list attribution * (item_list_name / item_list_id keyed by product id) across the funnel * (#405). Written client-side by the WooCommerce tracker on a select_item * list click; must match the literal used in js/frontend/gtm4wp-woocommerce.js. */ public const LIST_ATTRIBUTION_COOKIE = 'gtm4wp_item_list_attr'; /** * Name of the JavaScript function the server-rendered product-detail * view_item push is wrapped in so the list attribution is merged in the * browser instead of being baked into cacheable HTML (#405). * * PHP writes this identifier into a