@Override
    public void add(@NotNull DockableContent<?> _content, @Nullable RelativePoint dropTarget) {
      WindowFrameDockableContent content = (WindowFrameDockableContent)_content;
      moveTabToNewIndexOrWindow(content.myInfo, !isSameGroup(content.myTabsComponent));
    }
@Override
    public void add(@NotNull DockableContent<?> _content, @Nullable RelativePoint dropTarget)