code: public Observable<ServiceResponse<ImageCreateSummary>> createImagesFromFilesWithServiceResponseAsync(UUID projectId, ImageFileCreateBatch batch) {
          if (projectId == null) {
              throw new IllegalArgumentException("Parameter projectId is required and cannot be null.");
          }
          if (batch == null) {
              throw new IllegalArgumentException("Parameter batch is required and cannot be null.");
          }
          if (this.client.apiKey() == null) {
              throw new IllegalArgumentException("Parameter this.client.apiKey() is required and cannot be null.");
          }
          Validator.validate(batch);
          return service.createImagesFromFiles(projectId, batch, this.client.apiKey(), this.client.acceptLanguage(), this.client.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ImageCreateSummary>>>() {
                  @Override
                  public Observable<ServiceResponse<ImageCreateSummary>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<ImageCreateSummary> clientResponse = createImagesFromFilesDelegate(response);
                          return Observable.just(clientResponse);
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }
docs: Add the provided batch of images to the set of training images.
  This API accepts a batch of files, and optionally tags, to create images. There is a limit of 64 images and 20 tags.
  
  @param projectId The project id
  @param batch The batch of image files to add. Limited to 64 images and 20 tags per batch
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ImageCreateSummary object