}
@Override
public TransportLayer getTransportLayer() {
if (_transportLayer == null) {
_transportLayer = new TransportLayer() {
@Override
public void handleItem(IRoutedItem item) {
PipeBlockRequestTable.this.notifyOfItemArival(item.getInfo());
if(item.getItemIdentifierStack() != null) {
ItemIdentifierStack stack = item.getItemIdentifierStack();