add: off session option for payment intents

src/Message/PaymentIntents/AuthorizeRequest.php

@@ -126,6 +126,26 @@ public function getConfirm()
         return $this->getParameter('confirm');
     }
 
+    /**
+     * Set the confirm parameter.
+     *
+     * @param $value
+     */
+    public function setOffSession($value)
+    {
+        $this->setParameter('offSession', $value);
+    }
+
+    /**
+     * Get the confirm parameter.
+     *
+     * @return mixed
+     */
+    public function getOffSession()
+    {
+        return $this->getParameter('offSession');
+    }
+
     /**
      * @return mixed
      */
@@ -352,6 +372,8 @@ public function getData()
             $this->validate('returnUrl');
             $data['return_url'] = $this->getReturnUrl();
         }
+        $data['off_session'] = $this->getOffSession() ? 'true' : 'false';
+
 
         return $data;
     }