docs: @Pure
  	public static String getFirstFreeBusStopName(BusNetwork busNetwork) {
  		if (busNetwork == null) {
  			return null;
  		}
  		int nb = busNetwork.getBusStopCount();
  		String name;
  		do {
  			++nb;
  			name = Locale.getString("NAME_TEMPLATE", Integer.toString(nb)); //$NON-NLS-1$
  		}
  		while (busNetwork.getBusStop(name) != null);
  		return name;
  	}