code: public List<CmsPushButton> getButtonBar() {
  
          List<CmsPushButton> buttons = new ArrayList<CmsPushButton>();
          buttons.add(m_cancelButton);
          buttons.add(m_saveButton);
          buttons.add(m_downloadButton);
          buttons.add(m_uploadButton);
          return buttons;
      }
docs: Gets the buttons which should be displayed in the button bar of the popup containing this view.<p>
  
  @return the buttons for the popup button bar