code: public boolean notifyProgress(double progress) {
  
      boolean result = true;
  
      for (ProgressMonitor monitor : this.monitors) {
        if (!monitor.notifyProgress(progress)) {
          result = false;
        }
      }
  
      return result;
  
    }
docs: /* (non-Javadoc)
  @see ca.eandb.util.progress.ProgressMonitor#notifyProgress(double)