/**
  * Fix composite route.
  *
  * @param array $route
  */
 private function fixComposite(array &$route)
 {
     $prefix = isset($route['prefix']) ? $route['prefix'] : '/';
     $middlewares = $this->extractMiddleware($route);
     $whiteLists = array_keys($this->configMaps());
     $collection = new self($prefix);
     $collection->setMiddlewares($middlewares);
     foreach ($route as $name => $value) {
         if (in_array($name, $whiteLists)) {
             continue;
         }
         if (is_array($value)) {
             $collection->load($name, $value);
             unset($route[$name]);
             unset($route['prefix']);
             unset($route['middlewares']);
         }
     }
     $this->addCollection($collection);
 }