code: public static Response post(String url, String body) throws HttpException {
  
  		return post(url, body, null, null, DEFAULT_CONNECT_TIMEOUT, DEFAULT_READ_TIMEOUT);
  	}
docs: Makes POST request to given URL
  
  @param url     url
  @param body    request body to post or null to skip
  @return Response object with HTTP response code and response as String
  @throws HttpException in case of invalid input parameters