static @NotNull Insets getListCellPadding() {
    if (ExperimentalUI.isNewUI()) {
      int leftRightInset = JBUI.CurrentTheme.Popup.Selection.LEFT_RIGHT_INSET.get();
      return JBUI.insets(0, leftRightInset, 0, leftRightInset);
    }

    return UIUtil.getListCellPadding();
  }
static @NotNull Insets getListCellPadding()