public MoveForwardCommand(Robot robot)
 {
     _robot = robot;
     _moveActions = new Dictionary<string, Action<Robot>>
                        {
                            {"N", r => r.Position.Y += 1 },
                            {"E", r => r.Position.X += 1 },
                            {"S", r => r.Position.Y -= 1 },
                            {"W", r => r.Position.X -= 1 }
                        };
 }