set_method_title() public method

Set method title.
public set_method_title ( string $value )
$value string
 /**
  * Create or update an order shipping method
  *
  * @since 2.2
  * @param \WC_Order $order
  * @param array $shipping item data
  * @param string $action 'create' to add shipping or 'update' to update it
  * @throws WC_API_Exception invalid data, server error
  */
 protected function set_shipping($order, $shipping, $action)
 {
     // total must be a positive float
     if (isset($shipping['total']) && floatval($shipping['total']) < 0) {
         throw new WC_API_Exception('woocommerce_invalid_shipping_total', __('Shipping total must be a positive amount', 'woocommerce'), 400);
     }
     if ('create' === $action) {
         // method ID is required
         if (!isset($shipping['method_id'])) {
             throw new WC_API_Exception('woocommerce_invalid_shipping_item', __('Shipping method ID is required', 'woocommerce'), 400);
         }
         $rate = new WC_Shipping_Rate($shipping['method_id'], isset($shipping['method_title']) ? $shipping['method_title'] : '', isset($shipping['total']) ? floatval($shipping['total']) : 0, array(), $shipping['method_id']);
         $item = new WC_Order_Item_Shipping();
         $item->set_shipping_rate($rate);
         $shipping_id = $item->save();
         if (!$shipping_id) {
             throw new WC_API_Exception('woocommerce_cannot_create_shipping', __('Cannot create shipping method, try again', 'woocommerce'), 500);
         }
     } else {
         $item = new WC_Order_Item_Shipping($shipping['id']);
         if (isset($shipping['method_id'])) {
             $item->set_method_id($shipping['method_id']);
         }
         if (isset($shipping['method_title'])) {
             $item->set_method_title($shipping['method_title']);
         }
         if (isset($shipping['total'])) {
             $item->set_total(floatval($shipping['total']));
         }
         $shipping_id = $item->save();
         if (!$shipping_id) {
             throw new WC_API_Exception('woocommerce_cannot_update_shipping', __('Cannot update shipping method, try again', 'woocommerce'), 500);
         }
     }
 }