code: public void renew(String resourceGroupName, String certificateOrderName, RenewCertificateOrderRequest renewCertificateOrderRequest) {
          renewWithServiceResponseAsync(resourceGroupName, certificateOrderName, renewCertificateOrderRequest).toBlocking().single().body();
      }
docs: Renew an existing certificate order.
  Renew an existing certificate order.
  
  @param resourceGroupName Name of the resource group to which the resource belongs.
  @param certificateOrderName Name of the certificate order.
  @param renewCertificateOrderRequest Renew parameters
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent