docs: public static BaseResult kfsessionClose(String access_token, String kf_account, String openid, String text) {
  		String postJsonData = String.format("{\"kf_account\":\"%1s\",\"openid\":\"%2s\",\"text\":\"%3s\"}", 
  					kf_account,
  					openid,
  					text);
  		HttpUriRequest httpUriRequest = RequestBuilder.post()
  				.setHeader(jsonHeader)
  				.setUri(BASE_URI + "/customservice/kfsession/close")
  				.addParameter(PARAM_ACCESS_TOKEN, API.accessToken(access_token))
  				.setEntity(new StringEntity(postJsonData, Charset.forName("utf-8")))
  				.build();
  		return LocalHttpClient.executeJsonResult(httpUriRequest, BaseResult.class);
  	}