/// <summary>
/// Adds the specified node.
/// </summary>
/// <param name="node">The node.</param>
/// <exception cref="System.InvalidOperationException">Invalid Heuristic!</exception>
public override void Add(Node node)
{
if (Heuristic == null)
{
throw new InvalidOperationException("Invalid Heuristic!");
}
var h = Heuristic.Compute(node.State);
Add(node, h);
}
