extract subscriber discovery

src/EventsTrait.php

@@ -161,7 +161,7 @@ public function restoreEventListeners(string $event)
      */
     protected function getSubscriberClassName($subscriberClass): string
     {
-        if (is_object($subscriberClass) && in_array(EventSubscriber::class, class_implements($subscriberClass))) {
+        if ($this->isEventSubscriber($subscriberClass)) {
             return get_class($subscriberClass);
         }
 
@@ -175,6 +175,18 @@ protected function getSubscriberClassName($subscriberClass): string
         return $subscriberClass;
     }
 
+    /**
+     * Is an event subscriber.
+     *
+     * @param $subscriberClass
+     *
+     * @return bool
+     */
+    private function isEventSubscriber($subscriberClass): bool
+    {
+        return is_object($subscriberClass) && in_array(EventSubscriber::class, class_implements($subscriberClass));
+    }
+
     /**
      * Get registered events.
      *

src/RepositoryTrait.php

@@ -123,7 +123,7 @@ private function getObjectFactory(): callable
         if ($this->objectFactory === null) {
             $className = $this->getClassName();
 
-            $this->objectFactory = function() use ($className) {
+            $this->objectFactory = function () use ($className) {
                 return new $className();
             };
         }