upgrade

main/inc/lib/hook/interfaces/HookQuizEndObserverInterface.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * Interface HookQuizEndObserverInterface.
+ */
+interface HookQuizEndObserverInterface
+{
+    /**
+     * @param \HookQuizEndEventInterface $hookEvent
+     *
+     * @return mixed
+     */
+    public function hookQuizEnd(HookQuizEndEventInterface $hookEvent);
+}