code: public static Response get(String url, String username, String password, Header[] requestHeaders)
          throws URISyntaxException, HttpException {
          return send(new HttpGet(url), new UsernamePasswordCredentials(username, password), requestHeaders);
      }
docs: Performs an HTTP GET on the given URL
  
  @param url            The URL to connect to.
  @param username       Credentials - username
  @param password       Credentials - password
  @param requestHeaders Additional HTTP headers added to the request
  @throws HttpException
  @throws URISyntaxException