@Override
  public DnDDragStartBean startDragging(DnDAction action, @NotNull Point dragOrigin) {
    List<PackagingSourceItem> items = getSelectedItems();
    return new DnDDragStartBean(new SourceItemsDraggingObject(items.toArray(new PackagingSourceItem[0])));
  }
@Override
  public DnDDragStartBean startDragging(DnDAction action, @NotNull Point dragOrigin)