 render(String object) {
        SafeHtmlBuilder sb = new SafeHtmlBuilder();
        sb.appendHtmlConstant("(&lt;a href=\"javascript:;\"&gt;").appendEscaped(object)
            .appendHtmlConstant("&lt;/a&gt;)");
        return sb.toSafeHtml();
      }
    };
    viewFriendsColumn = new Column&lt;ContactInfo, String&gt;(new ClickableTextCell(anchorRenderer)) {
      @Override
      public String getValue(ContactInfo object) {
        if (showingFriends.contains(object.getId())) {
          return "hide frie