public function getControllerList($plugin = null, $prefix = null)
    {
        if (!$plugin) {
            $path = App::path('Controller' . (empty($prefix) ? '' : DS . Inflector::camelize($prefix)));
            $dir = new Folder($path[0]);
            $controllers = $dir->find('.*Controller\.php');
        } else {
            $path = App::path('Controller' . (empty($prefix) ? '' : DS . Inflector::camelize($prefix)), $plugin);
            $dir = new Folder($path[0]);
            $controllers = $dir->find('.*Controller\.php');
        }

        return $controllers;
    }