private function renderTemplate($filePath)
    {
        return $this->render(array(
            'url' => $this->url,
            'width' => $this->width,
            'height' => $this->height,
            'fullPage' => $this->fullPage,
            'timeout' => $this->timeout * 1000, // convert into milliseconds
            'waitForImages' => $this->waitForImages,
            'imagesLoadingTimeout' => $this->imagesLoadingTimeout * 1000, // convert into milliseconds
        ), $filePath);
    }