How to use DisplayAction class of org.openqa.selenium.interactions.internal package

@PayloadRoot(namespace = NAMESPACE_URI, localPart = "getOrderDetail")
public @ResponsePayload JAXBElement<OrderDetailResponse> getOrderDetail(@RequestPayload JAXBElement<String> customerId, @RequestPayload JAXBElement<String> promoCode)

@Endpoint
public class EmpEndpoint {

    @Autowired
    private EmpService empService;

    //This is like @RequestMapping of Spring MVC    
    @PayloadRoot(localPart = "EmpServiceRequest", namespace = "http://www.example.org/")
    @ResponsePayload
    public EmpServiceResponse getemployeeDetails(@RequestPayload EmpServiceRequest request) {
        EmpServiceResponse response = new ObjectFactory().createEmpServiceResponse();
        List<Employee> l = empService.getemployeeDetails(request.getName());
        response.setName(l.get(0).getName());
        response.setEmail(l.get(0).getEmail());
        return response;
    }
}

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