code: public AbstractButton addButton(final String text, final String iconImagePath, final boolean toggleButton) {
          final ImageIcon icon = ImageManager.get().getImageIcon(iconImagePath, IconUtils.ICON_SIZE_MEDIUM);
          return addButton(text, icon, toggleButton);
      }
docs: Adds a button to this {@link ComboButton}
  
  @param text
  the text of the button
  @param iconImagePath
  the icon path of the button
  @param toggleButton
  whether or not this button should be a toggle button (true) or
  a regular button (false)
  @return