* @throws IOException
     */
    protected static void loadConfigFile ( Path config, String[] applyMutations, Map<String, Map<String, String>> configs ) throws IOException {
        String fname = config.getFileName().toString();
        if ( !fname.endsWith(".conf") ) {
            return;
        }
        Properties props = new Properties();
        try ( FileChannel ch = FileChannel.open(config, StandardOpenOption.READ);