code: @Override
      public void onStartup(Set<Class<?>> arg0, ServletContext ctx) throws ServletException {
          IServletContext isc = (IServletContext) ctx;
          AppModuleName pair = setAppModuleNames(isc);
          if (pair != null) {
              isc.addListener(new AppTrackerServletContextListener(pair, this));
          }
      }
docs: {@inheritDoc}