code: public PhotosetInfo create(String title, String description, String primaryPhotoId) throws JinxException {
      JinxUtils.validateParams(title, primaryPhotoId);
      Map<String, String> params = new TreeMap<>();
      params.put("method", "flickr.photosets.create");
      params.put("title", title);
      params.put("primary_photo_id", primaryPhotoId);
      if (description != null) {
        params.put("description", description);
      }
  
      return jinx.flickrPost(params, PhotosetInfo.class);
    }
docs: Create a new photoset for the calling user.
  Authentication
  <br>
  This method requires authentication with 'write' permission.
  <br>
  New photosets are automatically put first in the photoset ordering for the user.
  Use orderSets if you don't want the new set to appear first on the user's photoset list.
  
  @param title          title for the photoset. Required.
  @param description    description of the photoset. Optional.
  @param primaryPhotoId id of the photo to represent this set. The photo must belong to the calling user. Required.
  @return instances of {@link net.jeremybrooks.jinx.response.photosets.PhotosetInfo} with only the photosetId and url
  fields set.
  @throws JinxException if required parameters are null, or if there are any errors.
  @see <a href="https://www.flickr.com/services/api/flickr.photosets.create.html">flickr.photosets.create</a>