code: public static void store(String name, Properties p) {
  		new File(confDir == null ? getAbsolutePath("conf") : confDir).mkdirs();
  		try (FileOutputStream out = new FileOutputStream(getConfPath(name, confDir))) {
  			p.store(out, null);
  		} catch (IOException e) {
  			throw new RuntimeException(e);
  		}
  	}
docs: Store the properties file into <b>conf_dir</b> (if defined in Conf.properties) or
  <b>conf/</b> relative to the current folder