private function getBundlesToBlend()
    {
        $toBlend = array();

        foreach ($this->config['blend'] as $key => $params) {
            $vendor = isset($params['vendor']) ? $params['vendor'] : null;
            $name = isset($params['name']) ? $params['name'] : null;
            $path = isset($params['path']) ? $params['path'] : null;

            if (!$vendor && !$name) {
                list($vendor, $name) = explode('/', $key, 2);
            }

            if (!isset($toBlend[$vendor][$name])) {
                $toBlend[$vendor][$name] = $path;
            }
        }

        return $toBlend;
    }