@NotNull
  public static VcsTreeModelData included(@NotNull ChangesTree tree) {
    assert tree.getModel().getRoot() instanceof ChangesBrowserNode;

    Set<Object> includedSet = tree.getIncludedSet();
    return new IncludedUnderData(includedSet, getRoot(tree));
  }
@NotNull
  public static VcsTreeModelData included(@NotNull ChangesTree tree)