code: public List<Alerter> getAvailableAlerters() {
  		List<Alerter> alerters = new ArrayList<Alerter>(alerterByType.size());
  		for (Alerter alerter : alerterByType.values()) {
  			if (alerter.isAvailable()) {
  				alerters.add(alerter);
  			}
  		}
  		return alerters;
  	}
docs: Returns all available {@link Alerter}s
  
  @return all available {@link Alerter}s