/** The default implementation caches properties pages in the MW plug-in. */
 public Component propertiesPage(WorkbenchContext context) {
   AbstractPropertiesPage propertiesPage =
       (AbstractPropertiesPage)
           this.getMappingsPlugin().buildPropertiesPage(this.propertiesPageClass());
   propertiesPage.setNode(this, this.buildLocalWorkbenchContext(context));
   return propertiesPage;
 }
 /** The default implementation caches properties pages in the MW plug-in. */
 protected void releasePropertiesPage(AbstractPropertiesPage propertiesPage) {
   // clear out the node so it can be garbage-collected if necessary and
   // replace the workbench context with a shell
   propertiesPage.setNode(null, this.buildShellWorkbenchContext());
   this.getMappingsPlugin().releasePropertiesPage(propertiesPage);
 }