private function cleanConfigParams()
    {
        /**
         * Add the params you want to be removed from the push notification
         */
        $paramsToBeRemoved = ['apiKey'];

        return array_filter($this->config, function ($key) use ($paramsToBeRemoved) {
            return !in_array($key, $paramsToBeRemoved);
        }, ARRAY_FILTER_USE_KEY);
    }