docs: public HistoryReference getHistoryReferenceFromNode(Object value) {
  		SiteNode node = null;
  		if (value instanceof SiteNode) {
  			node = (SiteNode) value;
  	
  			if (node.getHistoryReference() != null) {
  				try {
  					return node.getHistoryReference();
  				} catch (Exception e) {
  					log.warn(e.getMessage(), e);
  				}
  			}
  		}
  		return null;
  	}