code: private void addButtons() {
          int y = DEFAULT_DIALOG_HEIGHT - 19;
          int x = DEFAULT_DIALOG_WIDTH - DEFAULT_SIDE_PANE_WIDTH - 70;
  
          previousButtonName = this.insertButton(new PreviousActionListener(), x, y, 40, 0, I18nLabelsLoader.REPORT_STEP_BUTTONS_PREV, ((short) PushButtonType.STANDARD_value));
          x += 50;
          nextButtonName = this.insertButton(new NextActionListener(), x, y, 40, 0, I18nLabelsLoader.REPORT_STEP_BUTTONS_NEXT, ((short) PushButtonType.STANDARD_value));
          x += 50;
          cancelButtonName = this.insertButton(this, x, y, 40, 0, I18nLabelsLoader.REPORT_STEP_BUTTONS_CANCEL, ((short) PushButtonType.CANCEL_value));
      }
docs: Populate with buttons (previous, next)