public static @NotNull ActionCallback moveUp(final @NotNull JTree tree) {
    int row = tree.getLeadSelectionRow();
    if (row > 0) {
      row--;
      return showAndSelect(tree, row - 2, row, row, getSelectedRow(tree), false, true, true);
    } else {
      return ActionCallback.DONE;
    }
  }
public static @NotNull ActionCallback moveUp(final @NotNull JTree tree)