/**
  * Add cart_tax/shipping_tax key to any recurring taxes
  *
  * @since 4.2
  * @param $order_id a WooCommerce order ID
  */
 public function fix_recurring_taxes($order_id, $posted)
 {
     $order = new WC_Order($order_id);
     if (WC_Subscriptions_Order::order_contains_subscription($order) && WC_Subscriptions_Order::get_recurring_total_tax($order) > 0 && 'incl' !== $order->tax_display_cart) {
         if (count($order->get_items('recurring_tax')) > 0) {
             foreach ($order->get_items('recurring_tax') as $item_id => $item) {
                 wc_update_order_item_meta($item_id, 'cart_tax', $item['tax_amount']);
                 wc_update_order_item_meta($item_id, 'shipping_tax', $item['shipping_tax_amount']);
                 wc_update_order_item_meta($item_id, 'compound', true);
             }
         }
     }
 }