new appraoch

pancake/system/vendor/omnipay/paypal/src/PayPalItemBag.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * PayPal Item bag
+ */
+
+namespace Omnipay\PayPal;
+
+use Omnipay\Common\ItemBag;
+use Omnipay\Common\ItemInterface;
+
+/**
+ * Class PayPalItemBag
+ *
+ * @package Omnipay\PayPal
+ */
+class PayPalItemBag extends ItemBag
+{
+    /**
+     * Add an item to the bag
+     *
+     * @see Item
+     *
+     * @param ItemInterface|array $item An existing item, or associative array of item parameters
+     */
+    public function add($item)
+    {
+        if ($item instanceof ItemInterface) {
+            $this->items[] = $item;
+        } else {
+            $this->items[] = new PayPalItem($item);
+        }
+    }
+}