code: public static String getTrackerData() {
  
          // loop through all the contexts
          Enumeration vEnum = scrSessionContexts.elements();
  
          StringBuffer bigStrbuf = new StringBuffer();
  
          bigStrbuf.append("<center><h3>Session Tracking Internals</h3></center>" + "<UL>\n");
  
          while (vEnum.hasMoreElements()) {
              SessionContext localContext = (SessionContext) vEnum.nextElement();
              String contextData = localContext.toHTML();
              bigStrbuf.append(contextData).append("</UL>\n");
  
          }
  
          return (bigStrbuf.toString());
      }
docs: /*
  To get at TrackerData