@Override
public MiniConfigData configData(Context context, int configType, JSONObject params) {
    if(configType == MiniConfigData.TYPE_WEBVIEW) {
        //webView userAgent
        String ua = params.optString(MiniConfigData.WebViewConfig.WEBVIEW_CONFIG_UA);
        MiniConfigData.WebViewConfig webViewConfig = new MiniConfigData.WebViewConfig();
        // Set the UserAgent that developers need to add. Note: Do not set the original UserAgent value.
        webViewConfig.userAgent = "key/value";

        return new MiniConfigData
                .Builder()
                .webViewConfig(webViewConfig)
                .build();
    }

    return new MiniConfigData
            .Builder()
            .build();
}