/**
  * @return null
  */
 public function tearDown()
 {
     KernelRegistry::setRouteMap($this->backup);
     $this->dispatcher = null;
     $_GET = $this->bkSuperGlobals['get'];
     $_POST = $this->bkSuperGlobals['post'];
     $_FILES = $this->bkSuperGlobals['files'];
     $_COOKIE = $this->bkSuperGlobals['cookie'];
     $cli = $this->bkSuperGlobals['argv'];
     if (null !== $cli) {
         $_SERVER['argv'] = $cli;
     }
 }