code: @Override
      public void notifySynchronization() {
          try {
              synchronisationObservable.notifyObservers(System.currentTimeMillis());
          } catch (CouldNotPerformException ex) {
              ExceptionPrinter.printHistory(new CouldNotPerformException("Could not notify observer about synchronization", ex), logger);
          }
      }
docs: {@inheritDoc}