Neos\Flow\Http\Client\Browser::setRequestEngine PHP Method

    public function setRequestEngine(RequestEngineInterface $requestEngine)
    {
        $this->requestEngine = $requestEngine;
    }

 /**
  * Sets up a virtual browser and web environment for seamless HTTP and MVC
  * related tests.
  *
  * @return void
  */
 protected function setupHttp()
 {
     $this->browser = new \Neos\Flow\Http\Client\Browser();
     $this->browser->setRequestEngine(new \Neos\Flow\Http\Client\InternalRequestEngine());
     $this->router = $this->browser->getRequestEngine()->getRouter();
     $this->router->setRoutesConfiguration(null);
     $requestHandler = self::$bootstrap->getActiveRequestHandler();
     $request = Request::create(new \Neos\Flow\Http\Uri('http://localhost/typo3/flow/test'));
     $componentContext = new ComponentContext($request, new \Neos\Flow\Http\Response());
     $requestHandler->setComponentContext($componentContext);
 }