namespace Symfony\Component\HttpKernel\Debug;
use Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher as BaseTraceableEventDispatcher;
-use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\EventDispatcher\Event;
+use Symfony\Component\HttpKernel\KernelEvents;
/**
* Collects some data about event listeners.