API Standardise extension hooks (#249)

src/Extensions/SiteTreeContentReview.php

@@ -687,7 +687,7 @@ public function providePermissions()
      * If the queued jobs module is installed, queue up the first job for 9am tomorrow morning
      * (by default).
      */
-    public function requireDefaultRecords()
+    protected function onRequireDefaultRecords()
     {
         if (class_exists(ContentReviewNotificationJob::class)) {
             // Ensure there is not already a job queued