protected function _clearAcoPaths()
    {
        $this->loadModel('User.Acos');
        $nodes = $this->Acos
            ->find()
            ->where(['plugin' => $this->params['plugin']])
            ->order(['lft' => 'ASC'])
            ->all();

        foreach ($nodes as $node) {
            $this->Acos->removeFromTree($node);
            $this->Acos->delete($node);
        }

        AcoManager::buildAcos(null, true); // clear anything else
    }