docs: public PhotoList<Photo> getNotInSet(int perPage, int page) throws FlickrException {
          PhotoList<Photo> photos = new PhotoList<Photo>();
  
          Map<String, Object> parameters = new HashMap<String, Object>();
          parameters.put("method", PhotosInterface.METHOD_GET_NOT_IN_SET);
  
          RequestContext requestContext = RequestContext.getRequestContext();
  
          List<String> extras = requestContext.getExtras();
          if (extras.size() > 0) {
              parameters.put("extras", StringUtilities.join(extras, ","));
          }
  
          if (perPage > 0) {
              parameters.put("per_page", Integer.toString(perPage));
          }
          if (page > 0) {
              parameters.put("page", Integer.toString(page));
          }
  
          Response response = transport.get(transport.getPath(), parameters, apiKey, sharedSecret);
          if (response.isError()) {
              throw new FlickrException(response.getErrorCode(), response.getErrorMessage());
          }
          Element photosElement = response.getPayload();
          photos.setPage(photosElement.getAttribute("page"));
          photos.setPages(photosElement.getAttribute("pages"));
          photos.setPerPage(photosElement.getAttribute("perpage"));
          photos.setTotal(photosElement.getAttribute("total"));
  
          NodeList photoElements = photosElement.getElementsByTagName("photo");
          for (int i = 0; i < photoElements.getLength(); i++) {
              Element photoElement = (Element) photoElements.item(i);
              photos.add(PhotoUtils.createPhoto(photoElement));
          }
          return photos;
      }