private FieldModel build(params string[] tokens)
        {
            var queue = new Queue <string>(tokens);
            var graph = new FieldCommand().Usages;

            return((FieldModel)graph.BuildInput(queue));
        }
        private FieldModel build(params string[] tokens)
        {
            var queue   = new Queue <string>(tokens);
            var graph   = new FieldCommand().Usages;
            var creator = new ActivatorCommandCreator();

            return((FieldModel)graph.BuildInput(queue, creator));
        }