/// <summary>
/// Subscribe to the state change of the node.
/// </summary>
/// <param name="successor">The node to subscribe the state changes.</param>
protected virtual void SubscribeStateChanged(Node successor)
{
this.StateChanged += (s, e) => successor.ComposeState(StateChangeSource.Predecessor);
successor.ComposeState(StateChangeSource.Predecessor);
successor.StateChanged += (s, e) => this.ComposeState(StateChangeSource.Successor);
this.ComposeState(StateChangeSource.Successor);
}
/// <summary>
/// Subscribe to state changes of this node.
/// </summary>
protected override void SubscribeStateChanged(Node successor)
{
// No need to subscribe to state changes of the initial node
}