/// <summary>
 /// Raise the PrizeChanged event
 /// </summary>
 /// <param name="prize"></param>
 protected virtual void OnPrizeChanged(IOnTime prize)
 {
     PrizeChanged?.Invoke(this, prize);
 }
 /// <summary>
 /// Raise the PrizeBeforeChange event
 /// </summary>
 /// <param name="prize"></param>
 protected virtual void OnPrizeBeforeChange(IOnTime prize)
 {
     PrizeBeforeChange?.Invoke(this, prize);
 }