/// <inheritdoc />
        protected override void Execute(TransactionItem item, IRuleExecuteContext context)
        {
            var beginLifetimeTunnelBoundsChange = item.AsBoundsChange <IBeginLifetimeTunnel>();

            if (beginLifetimeTunnelBoundsChange.IsValid)
            {
                IBeginLifetimeTunnel beginLifetimeTunnel = beginLifetimeTunnelBoundsChange.TargetElement;
                beginLifetimeTunnel.TerminateLifetimeTunnel.Top = beginLifetimeTunnel.Top;
            }
            var removedBorderNode = item.AsComponentRemove <BorderNode, Structure>();

            if (removedBorderNode != null)
            {
                Element toDelete                = null;
                var     beginLifetimeTunnel     = removedBorderNode as IBeginLifetimeTunnel;
                var     terminateLifetimeTunnel = removedBorderNode as ITerminateLifetimeTunnel;
                if (beginLifetimeTunnel != null)
                {
                    toDelete = (Element)beginLifetimeTunnel.TerminateLifetimeTunnel;
                }
                else if (terminateLifetimeTunnel != null)
                {
                    toDelete = (Element)terminateLifetimeTunnel.BeginLifetimeTunnel;
                }
                toDelete?.Delete();
            }
        }