.mvn/wrapper/MavenWrapperDownloader.java/MavenWrapperDownloader/downloadFileFromURL
class MavenWrapperDownloader:    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
        URL website = new URL(urlString);
        ReadableByteChannel rbc;
        rbc = Channels.newChannel(website.openStream());
        FileOutputStream fos = new FileOutputStream(destination);
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        fos.close();
        rbc.close();
    }