code: public Observable<ApplicationInfoResponse> getAsync(UUID appId) {
          return getWithServiceResponseAsync(appId).map(new Func1<ServiceResponse<ApplicationInfoResponse>, ApplicationInfoResponse>() {
              @Override
              public ApplicationInfoResponse call(ServiceResponse<ApplicationInfoResponse> response) {
                  return response.body();
              }
          });
      }
docs: Gets the application info.
  
  @param appId The application ID.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ApplicationInfoResponse object