code: protected PushButton createIconButton(String icon) {
  
          CmsPushButton button = new CmsPushButton();
          button.setImageClass(icon);
          button.setButtonStyle(ButtonStyle.FONT_ICON, null);
          return button;
      }
docs: Creates an icon button for editing aliases.<p>
  
  @param icon the icon css class to use
  
  @return the new icon button