public GraphNode <T> FindNode(T value)
{
var nodeFinder = new NodeFinder <T>();
return(NodeSet.Select(graphNode => nodeFinder.FindNode(graphNode, value)).FirstOrDefault(found => found != null));
}
public GraphNode <T> FindNode(NodeFinder <T> nodeFinder, T value)
{
return(nodeFinder.FindNode(this, value));
}