public LispParser.Node BuildParseTree()
 {
     LispParser.MethodNode node = new LispParser.MethodNode("TaskUtility");
     node.Add(UtilityComputer.BuildParseTree());
     node.Add(Task.BuildParseTree());
     return(node);
 }
 public void UpdateUtility()
 {
     Utility = UtilityComputer.TryEvaluateToFloat();
 }