protected override void OnAbort()
        {
            StreamUpgradeProvider localUpgrade = GetUpgrade();

            if (localUpgrade != null)
            {
                localUpgrade.Abort();
            }
            base.OnAbort();
        }
        protected override void OnAbort()
        {
            StreamUpgradeProvider upgrade = this.GetUpgrade();

            if (upgrade != null)
            {
                upgrade.Abort();
            }
            base.OnAbort();
        }