@NotNull
      @Override
      protected JComboBox<GithubTagInfo> createValuesComboBox() {
        JComboBox<GithubTagInfo> box = super.createValuesComboBox();
        box.setRenderer(SimpleListCellRenderer.create((label, tag, index) -> {
          final String text;
          if (tag == null) {
            text = isBackgroundJobRunning() ? CommonBundle.getLoadingTreeNodeText() : LangBundle.message("label.unavailable");
          }
          else {
            text = tag.getName();
          }
          label.setText(text);
        }));

        return box;
      }
@NotNull
      @Override
      protected JComboBox<GithubTagInfo> createValuesComboBox()