code: public void setClearButtonEnabled(boolean enabled) {
  
          if (enabled) {
              m_clearButton.enable();
          } else {
              m_clearButton.disable(Messages.get().key(Messages.GUI_DISABLE_CLEAR_LIST_0));
          }
      }
docs: Sets the clear list button enabled.<p>
  
  @param enabled <code>true</code> to enable the button