docs: public static BatchGetResult batchGet(String accessToken, String postJson) {
  		HttpUriRequest httpUriRequest = RequestBuilder
  				.post()
  				.setHeader(jsonHeader)
  				.setUri(BASE_URI + "/card/batchget")
  				.addParameter(PARAM_ACCESS_TOKEN, API.accessToken(accessToken))
  				.setEntity(new StringEntity(postJson, Charset.forName("utf-8")))
  				.build();
  		return LocalHttpClient.executeJsonResult(httpUriRequest,
  				BatchGetResult.class);
  	}