private function getHttpStatusCode($statusCode)
{
if ($statusCode >= 100 && $statusCode < 600) {
return $statusCode;
} elseif (FrontControllerException::BAD_REQUEST === $statusCode || FrontControllerException::INTERNAL_ERROR === $statusCode || FrontControllerException::NOT_FOUND === $statusCode) {
return $statusCode - FrontControllerException::UNKNOWN_ERROR;
}
return 500;
}