docs: void updateWidth() {
  
          if (formCss().firstColumn().equals(m_compacteModeStyle.getValue())) {
              int width = getElement().getParentElement().getOffsetWidth() - formCss().SECOND_COLUMN_WIDTH();
              // if width could not be evaluated, fall back to a 'save' value
              if (width < 0) {
                  width = 400;
              }
              getElement().getStyle().setWidth(width, Unit.PX);
          } else {
              getElement().getStyle().clearWidth();
          }
      }