docs: public static String generatePapayEntrustwebURL(PapayEntrustweb papayEntrustweb, String key) {
  		Map<String, String> map = MapUtil.objectToMap(papayEntrustweb);
  		String sign = SignatureUtil.generateSign(map, key);
  		map.put("sign", sign);
  		String params = MapUtil.mapJoin(map, false, true);
  		return "https://api.mch.weixin.qq.com/papay/entrustweb?" + params;
  	}