protected function prepare_shipping_lines( $posted, $action = 'create', $item = null ) {
        $item = is_null( $item ) ? new WC_Order_Item_Shipping( ! empty( $posted['id'] ) ? $posted['id'] : '' ) : $item;

        if ( 'create' === $action ) {
            if ( empty( $posted['method_id'] ) ) {