/// <summary>
/// Calculates the benefits point withdraw.
/// </summary>
/// <param name="count">The count.</param>
/// <param name="calculate">The calculate.</param>
protected override void CalculatePointWithdraw(decimal count, ICalculate calculate)
{
int point = calculate.CalculateWithdraw(count, coefWindrawPoint, this.Point);
this.Point = point < 0 ? 0 : point;
}