if ( !fname.endsWith(".conf") ) {
            return;
        }
        Properties props = new Properties();
        try ( FileChannel ch = FileChannel.open(config, StandardOpenOption.READ);
              InputStream is = Channels.newInputStream(ch) ) {
            props.load(is);

        }
        if ( !props.isEmpty() ) {
            Map<String, String> map = toMap(props);