code: @Pure
  	public BusHub getBusHub(UUID uuid) {
  		if (uuid == null) {
  			return null;
  		}
  		for (final BusHub busHub : this.validBusHubs) {
  			if (uuid.equals(busHub.getUUID())) {
  				return busHub;
  			}
  		}
  		for (final BusHub busHub : this.invalidBusHubs) {
  			if (uuid.equals(busHub.getUUID())) {
  				return busHub;
  			}
  		}
  		return null;
  	}
docs: Replies the bus hub with the specified uuid.
  
  @param uuid the identifier.
  @return a bus hub or <code>null</code>