WC_Checkout::create_order_fee_lines PHP Method

    protected function create_order_fee_lines(&$order)
    {
        foreach (WC()->cart->get_fees() as $fee_key => $fee) {
            $item = new WC_Order_Item_Fee();
            $item->set_props(array('name' => $fee->name, 'tax_class' => $fee->taxable ? $fee->tax_class : 0, 'total' => $fee->amount, 'total_tax' => $fee->tax, 'taxes' => array('total' => $fee->tax_data)));
            // Set this to pass to legacy actions.
            $item->legacy_fee = $fee;
            $item->legacy_fee_key = $fee_key;
            $order->add_item($item);
        }
    }