From c227b02810721c4f8f733fada4081a97c0dd1008 Mon Sep 17 00:00:00 2001
From: rohit basu <robasu@paypal.com>
Date: Tue, 11 Dec 2018 12:06:02 -0800
Subject: [PATCH] adding target subject to the generate access token call

---
 lib/PayPal/Auth/OAuthTokenCredential.php | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/PayPal/Auth/OAuthTokenCredential.php b/lib/PayPal/Auth/OAuthTokenCredential.php
index d142aa0c..91e4a02e 100644
--- a/lib/PayPal/Auth/OAuthTokenCredential.php
+++ b/lib/PayPal/Auth/OAuthTokenCredential.php
@@ -47,6 +47,11 @@ class OAuthTokenCredential extends PayPalResourceModel
      */
     private $clientSecret;
 
+    /**
+     * Target subject
+     */
+    private $targetSubject;
+
     /**
      * Generated Access Token
      *
@@ -81,11 +86,12 @@ class OAuthTokenCredential extends PayPalResourceModel
      * @param string $clientId     client id obtained from the developer portal
      * @param string $clientSecret client secret obtained from the developer portal
      */
-    public function __construct($clientId, $clientSecret)
+    public function __construct($clientId, $clientSecret, $targetSubject = null)
     {
         $this->clientId = $clientId;
         $this->clientSecret = $clientSecret;
         $this->cipher = new Cipher($this->clientSecret);
+        $this->targetSubject = $targetSubject;
     }
 
     /**
@@ -267,6 +273,9 @@ private function generateAccessToken($config, $refreshToken = null)
             $params['grant_type'] = 'refresh_token';
             $params['refresh_token'] = $refreshToken;
         }
+        if ($this->targetSubject != null) {
+            $params['target_subject'] = $this->targetSubject;
+        }
         $payload = http_build_query($params);
         $response = $this->getToken($config, $this->clientId, $this->clientSecret, $payload);