private TagButton getDropButton(TagButton replaceButton, DnDEvent event) {
    int i = myTags.indexOf(replaceButton);
    if (i > myTags.indexOf(event.getAttachedObject())) {
      return replaceButton;
    }
    return ContainerUtil.findLast(myTags, button -> button.isVisible() && myTags.indexOf(button) < i);
  }
private TagButton getDropButton(TagButton replaceButton, DnDEvent event)