code: public RequestBuilder request(String method, String url) {
          try {
              return request(method, new URL(url));
          } catch (MalformedURLException e) {
              log.error("url exception", e);
              throw new IllegalArgumentException(e);
          }
      }
docs: Create a RequestBuilder with HTTP method and URL.
  
  @param method HTTP method.
  @param url    The request URL.
  @return A new RequestBuilder that helps you to build an HTTP request.