code: public Observable<ServiceResponse<UUID>> addWithServiceResponseAsync(ApplicationCreateObject applicationCreateObject) {
          if (this.client.endpoint() == null) {
              throw new IllegalArgumentException("Parameter this.client.endpoint() is required and cannot be null.");
          }
          if (applicationCreateObject == null) {
              throw new IllegalArgumentException("Parameter applicationCreateObject is required and cannot be null.");
          }
          Validator.validate(applicationCreateObject);
          String parameterizedHost = Joiner.on(", ").join("{Endpoint}", this.client.endpoint());
          return service.add(applicationCreateObject, this.client.acceptLanguage(), parameterizedHost, this.client.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<UUID>>>() {
                  @Override
                  public Observable<ServiceResponse<UUID>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<UUID> clientResponse = addDelegate(response);
                          return Observable.just(clientResponse);
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }
docs: Creates a new LUIS app.
  
  @param applicationCreateObject A model containing Name, Description (optional), Culture, Usage Scenario (optional), Domain (optional) and initial version ID (optional) of the application. Default value for the version ID is 0.1. Note: the culture cannot be changed after the app is created.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the UUID object