public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
$mediaType = $request->attributes->get('media_type');
if (1 === preg_match($this->regex, $mediaType, $matches)) {
$this->version = $matches['version'];
$request->attributes->set('version', $this->version);
if ($this->viewHandler instanceof ConfigurableViewHandlerInterface) {
$this->viewHandler->setExclusionStrategyVersion($this->version);
}
}
}
