public MarsRoverCommand(MarsRover rover)
 {
     this.Rover = rover;
 }
 public BrakeCommand(MarsRover rover)
     : base(rover)
 {
 }
 public TurnLeftCommand(MarsRover rover)
     : base(rover)
 {
 }
 public TurnRightCommand(MarsRover rover)
     : base(rover)
 {
 }
 public AccelerateCommand(MarsRover rover)
     : base(rover)
 {
 }