code: public void stop() {
          Collection<List<DefaultPageMounter>> values;
          synchronized (mountPointRegistrations) {
              values = new ArrayList<List<DefaultPageMounter>>(mountPointRegistrations.values());
              mountPointRegistrations.clear();
          }
          for (List<DefaultPageMounter> bundleMounters : values) {
              for (DefaultPageMounter pageMounter : bundleMounters) {
                  pageMounter.dispose();
              }
          }
      }
docs: <p>stop.</p>