/**
  * @param Application $app
  *
  * @throws \ObjectivePHP\Config\Exception
  */
 public function __invoke(ApplicationInterface $app)
 {
     // setup autoloading for current package
     //
     // note that a relative path is relative to the application root directory!
     $app->getAutoloader()->addPsr4('Project\\Package\\Example\\', 'packages/Example/src');
     // init package here
     $configLoader = new DirectoryLoader();
     $configLoader->loadInto($app->getConfig(), __DIR__ . '/config');
 }