code: public void removeAllBusHubs() {
  		for (final BusHub busHub : this.validBusHubs) {
  			busHub.setContainer(null);
  			busHub.setEventFirable(true);
  		}
  		for (final BusHub busHub : this.invalidBusHubs) {
  			busHub.setContainer(null);
  			busHub.setEventFirable(true);
  		}
  		this.validBusHubs.clear();
  		this.invalidBusHubs.clear();
  		firePrimitiveChanged(new BusChangeEvent(this,
  				BusChangeEventType.ALL_HUBS_REMOVED,
  				null,
  				-1,
  				null,
  				null,
  				null));
  		revalidate();
  	}
docs: Remove all the bus hubs from the current network.