code: public Observable<OperationStatus> updateAsync(UUID appId, ApplicationUpdateObject applicationUpdateObject) {
          return updateWithServiceResponseAsync(appId, applicationUpdateObject).map(new Func1<ServiceResponse<OperationStatus>, OperationStatus>() {
              @Override
              public OperationStatus call(ServiceResponse<OperationStatus> response) {
                  return response.body();
              }
          });
      }
docs: Updates the name or description of the application.
  
  @param appId The application ID.
  @param applicationUpdateObject A model containing Name and Description of the application.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the OperationStatus object