/** @return */
 private static UserPreferencesHelper getUserPrefenceHelper() {
   return UserPreferencesHelper.getInstance(
       M_VIEWS_COMMON,
       PortalConfiguration.getInstance().getPrefScopesHelper().getSelectedPreferenceScope());
 }
 public ImageViewerConfigurationBean() {
   PortalConfiguration.getInstance().addListener(this);
   initialize();
 }