Merge pull request #223 from creative-commoners/pulls/4/pulls/6/prote…

…ct-hooks

API Set extension hook implementation visibility to protected

tests/Reports/Stubs/SiteSummaryExtensionStub.php

@@ -7,7 +7,7 @@
 
 class SiteSummaryExtensionStub extends Extension implements TestOnly
 {
-    public function updateAlerts(&$alerts)
+    protected function updateAlerts(&$alerts)
     {
         $alerts[] = '<p><strong>Alert! Alert!</strong> <br />Sound the alarm!</p>';
     }