From 1b19f2701d2b900f757fb8ee529a2e8e53006a0e Mon Sep 17 00:00:00 2001
From: thomasmars <thomasmars87@gmail.com>
Date: Mon, 13 Mar 2017 14:56:01 +0100
Subject: [PATCH] Make data optional in fetchExternalData function

HFP-822
---
 h5p.classes.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/h5p.classes.php b/h5p.classes.php
index a48efa0..819ceb8 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -23,7 +23,7 @@ interface H5PFrameworkInterface {
    * @param $data
    * @return string The content (response body). NULL if something went wrong
    */
-  public function fetchExternalData($url, $data);
+  public function fetchExternalData($url, $data = NULL);
 
   /**
    * Set the tutorial URL for a library. All versions of the library is set