code: public void openDialog(final I_CmsDialogContext context, String tabId) {
  
          CmsGwtDialogExtension extension = new CmsGwtDialogExtension(A_CmsUI.get(), new I_CmsUpdateListener<String>() {
  
              public void onUpdate(List<String> updatedItems) {
  
                  List<CmsUUID> ids = Lists.newArrayList();
                  for (String item : updatedItems) {
                      ids.add(new CmsUUID(item));
                  }
                  context.finish(ids);
              }
          });
          extension.openInfoDialog(context.getResources().get(0), tabId);
      }
docs: Opens the resource info dialog with the given start tab.<p>
  
  @param context the dialog context
  @param tabId the tab to open