Saving images from CDN to local device

for (questionnaire in json["questionnaires"]) {
	for (question in questionnaire["questions"]) {
		for (choice in questions["choices"]) {
			if (choice["contentType"] == "image") {
				imageURLToDownload = CDN_BASE_URL + choice["content"];
				file = DownloadImageURL(imageURLToDownload);
				SaveFileToLocalDeviceWithName(file, choice["content"]);
			}
		}
	}
}