private void getContributions(IPreferenceStore store) {
   try {
     IExtensionRegistry registry = Platform.getExtensionRegistry();
     IExtensionPoint point =
         registry.getExtensionPoint(
             HTMLPlugin.getDefault().getPluginId() + ".preferenceContributer");
     IExtension[] extensions = point.getExtensions();
     for (int i = 0; i < extensions.length; i++) {
       IConfigurationElement[] elements = extensions[i].getConfigurationElements();
       for (int j = 0; j < elements.length; j++) {
         if ("contributer".equals(elements[j].getName())) {
           IHTMLPreferenceContributer contributer =
               (IHTMLPreferenceContributer) elements[j].createExecutableExtension("class");
           contributer.initializeDefaultPreferences(store);
         }
       }
     }
   } catch (Exception ex) {
     HTMLPlugin.logException(ex);
   }
 }