docs: private static String readFile(String _name) throws IOException {
      InputStream in = SingleProviderResolver.class.getClassLoader().getResourceAsStream(_name);
      if (in == null) {
        return null;
      }
      try {
        LineNumberReader r = new LineNumberReader(new InputStreamReader(in));
        String l = r.readLine();
        while (l != null) {
          if (!l.startsWith("#")) {
            return l;
          }
          l = r.readLine();
        }
      } finally {
        in.close();
      }
      return null;
    }