private static void SetScoreLastFrame(IList <int?> score, ILastFrame lastFrame)
 {
     lastFrame.SetBallOne(score[0] == null ? 0 : (int)score[0]);
     lastFrame.SetBallTwo(score[1] == null ? 0 : (int)score[1]);
     lastFrame.SetBallThree(score[2] == null ? 0 : (int)score[2]);
 }
 public void Given_A_Frame()
 {
     _frame = new LastFrame(NumberOfFrames, NumberOfPins);
 }