class WebDebugToolbarListener implements EventSubscriberInterface
WebDebugToolbarListener injects the Web Debug Toolbar.
The onKernelResponse method must be connected to the kernel.response event.
The WDT is only injected on well-formed HTML (with a proper
© 2004–2016 Fabien Potencier
Licensed under the MIT License.
http://api.symfony.com/2.7/Symfony/Bundle/WebProfilerBundle/EventListener/WebDebugToolbarListener.html