code: public Photos getClusterPhotos(String tag, String clusterId) throws JinxException {
      JinxUtils.validateParams(tag, clusterId);
      Map<String, String> params = new TreeMap<>();
      params.put("method", "flickr.tags.getClusterPhotos");
      params.put("tag", tag);
      params.put("cluster_id", clusterId);
      return jinx.flickrGet(params, Photos.class, false);
    }
docs: Returns the first 24 photos for a given tag cluster
  
  This method does not require authentication.
  
  @param tag       the tag that the cluster belongs to. Required.
  @param clusterId top three tags for the cluster, separated by dashes. Required.
  @return first 24 photos for a given tag cluster.
  @throws JinxException if required parameters are missing, or if there are any errors.
  @see <a href="https://www.flickr.com/services/api/flickr.tags.getClusterPhotos.html">flickr.tags.getClusterPhotos</a>