code: public RelatedTagsList getRelated(String tag) throws FlickrException {
  
          Map<String, Object> parameters = new HashMap<String, Object>();
          parameters.put("method", METHOD_GET_RELATED);
  
          parameters.put("tag", tag);
  
          Response response = transportAPI.get(transportAPI.getPath(), parameters, apiKey, sharedSecret);
          if (response.isError()) {
              throw new FlickrException(response.getErrorCode(), response.getErrorMessage());
          }
  
          Element tagsElement = response.getPayload();
  
          RelatedTagsList tags = new RelatedTagsList();
          tags.setSource(tagsElement.getAttribute("source"));
          NodeList tagElements = tagsElement.getElementsByTagName("tag");
          for (int i = 0; i < tagElements.getLength(); i++) {
              Element tagElement = (Element) tagElements.item(i);
              Tag t = new Tag();
              t.setValue(XMLUtilities.getValue(tagElement));
              tags.add(t);
          }
          return tags;
      }
docs: Get the related tags.
  
  <p>
  This method does not require authentication.
  </p>
  
  @param tag
  The source tag
  @return A RelatedTagsList object
  @throws FlickrException