public FollowingLineState(double targetSpeed, IBrain brain) : base(brain)
 {
     this.Enter();
     this.targetSpeed = targetSpeed;
     NextState        = new ReadyToServeState(Brain);
 }
 public SelfDiagnosticState(IBrain brain) : base(brain)
 {
     this.Enter();
     NextState = new ReadyToServeState(Brain);
 }