1class RCommand
 2  def run(rover)
 3    rover.extend(Rotation)
 4    rover.turn_right
 5  end
 6end
 7class LCommand
 8  def run(rover)
 9    rover.extend(Rotation)
10    rover.turn_left
11  end
12end
13class MCommand
14  def run(rover)
15    rover.drive
16  end
17end