created get_refunds() method for WC_Order class

includes/class-wc-order.php

@@ -1,18 +1,51 @@
 <?php
-
 /**
  * Order
  *
  * @class    WC_Order
- * @version		2.1.0
+ * @version  2.2.0
  * @package  WooCommerce/Classes
  * @category Class
  * @author   WooThemes
  */
 
 class WC_Order extends WC_Abstract_Order {
+
+	/**
+	 * Initialize the order refund.
+	 *
+	 * @param int|WC_Order $order
+	 */
 	public function __construct( $order ) {
 		$this->order_type = 'simple';
+
 		parent::__construct( $order );
 	}
+
+	/**
+	 * Get order refunds
+	 *
+	 * @since 2.2
+	 * @return array
+	 */
+	public function get_refunds() {
+		global $wpdb;
+
+		$refunds      = array();
+		$refund_items = get_posts(
+			array(
+				'post_type'      => 'shop_order',
+				'post_parent'    => $this->id,
+				'posts_per_page' => -1,
+				'fields'         => 'ids',
+				'order_type'     => 'refund'
+			)
+		);
+
+		foreach ( $refund_items as $refund_id ) {
+			$refunds[] = new WC_Order_Refund( $refund_id );
+		}
+
+		return $refunds;
+	}
 }