public virtual void GivePromotion()
{
// Bump benefit package from Standard to Gold, Gold to Platinum
if (empBenefits.GetType() == typeof(BenefitPackage))
{
empBenefits = new GoldBenefitPackage();
}
else if (empBenefits is GoldBenefitPackage)
{
empBenefits = new PlatinumBenefitPackage();
}
}
