This reference matches the partner link definition that is contained in the BPEL file.

As you can see from the link definition in Listing 5, I created a new BrowsersController controller class to manage this code.

BPEL4WS enabled WSDL definitions require some additional information and since this WSDL file will be used in the BPEL4WS process, it requires a service link definition to be added to the file.