new appraoch

pancake/system/vendor/league/event/src/EmitterAwareInterface.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace League\Event;
+
+interface EmitterAwareInterface
+{
+    /**
+     * Set the Emitter.
+     *
+     * @param EmitterInterface $emitter
+     *
+     * @return $this
+     */
+    public function setEmitter(EmitterInterface $emitter = null);
+
+    /**
+     * Get the Emitter.
+     *
+     * @return EmitterInterface
+     */
+    public function getEmitter();
+}