code: @Override
      public List<Image> getImageBulk(Boolean includeFingerprint, Integer scalar, ImagePlotShape shape, Double sparsity,
              String jsonModel) throws JsonProcessingException, ApiException {
          
          LOG.debug("Retrieve images for bulk expressions: model: " + jsonModel + "  scalar: " + scalar + "  sparsity: "
                  + sparsity + "  shape: " + name(shape) + "  include fingerprint: " + includeFingerprint);
          String shapeString = null;
          if (shape != null) {
              shapeString = shape.name().toLowerCase();
          }
          return api.getImageForBulkExpressions(jsonModel, includeFingerprint, retinaName, scalar, shapeString, sparsity);
      }
docs: {@inheritDoc}
  @throws ApiException
  @throws JsonProcessingException