implement EventInterface

src/Potter/Event/Event.php

@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Potter\Event;
+
+final class Event extends AbstractEvent
+{
+    use EventTrait;
+}

src/Potter/Event/EventTrait.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Potter\Event;
+
+trait EventTrait 
+{
+    final public function eventName(): string
+    {
+        return is_string($subject = $this->getSubject()) ? 
+            $subject : get_class($this);
+    }
+        
+    abstract public function getSubject(): mixed;
+}