code: private void configure(String info) {
          // construct our configuration map
          config = new HashMap();
  
          // leave the map empty if we have nothing to configure
          if (info == null) {
              return;
          }
  
          // separate parameter into space-separated tokens and store them
          StringTokenizer st = new StringTokenizer(info);
          while (st.hasMoreTokens()) {
              String pair = st.nextToken();
              StringTokenizer pairTokens = new StringTokenizer(pair, ":");
              String element = pairTokens.nextToken();
              String attribute = pairTokens.nextToken();
              Object atts = config.get(element);
              if (atts == null) {
                  atts = new HashSet();
                  config.put(element, atts);
              }
              ((Set) atts).add(attribute);
          }
      }
docs: parses our configuration parameter for element:attribute pairs