public void setChildren(List<TreeNode> children) {
this.children = children;
}
@Override
public int hashCode() {
<BUG>return new HashCodeBuilder(1, 7).

appendSuper(super.hashCode()).

append(getExpanded()).
append(getChildren()).

toHashCode();
</BUG>
}

public void setChildren(List<TreeNode> children) {
this.children = children;
}
