public GraphNodeEnumerator(GraphNode n)
{
m_arrayEnumerator = n.m_children.GetEnumerator();
}
/// <summary>
/// Adds a new child node
/// </summary>
/// <param name="key">The key for the child</param>
/// <param name="data">The data for the child</param>
/// <returns>The child node added to the graph.</returns>
public GraphNode Add(object key, object data)
{
GraphNode n = new GraphNode(key, data, m_sorted) {m_parent = this};
m_children.Add(key, n);
return n;
}