Payments API Updates

lib/PayPal/Api/Billing.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace PayPal\Api;
+
+use PayPal\Common\PayPalModel;
+
+/**
+ * Class Billing
+ *
+ * Billing instrument used to charge the payer.
+ *
+ * @package PayPal\Api
+ *
+ * @property string billing_agreement_id
+ */
+class Billing extends PayPalModel
+{
+    /**
+     * Identifier of the instrument in PayPal Wallet
+     *
+     * @param string $billing_agreement_id
+     * 
+     * @return $this
+     */
+    public function setBillingAgreementId($billing_agreement_id)
+    {
+        $this->billing_agreement_id = $billing_agreement_id;
+        return $this;
+    }
+
+    /**
+     * Identifier of the instrument in PayPal Wallet
+     *
+     * @return string
+     */
+    public function getBillingAgreementId()
+    {
+        return $this->billing_agreement_id;
+    }
+
+}