code: public boolean isActiveForTriggerAndMetric(Trigger trigger, Metric metric) {
      	String key = _hashTriggerAndMetric(trigger, metric);
      	return this.activeStatusByTriggerAndMetric.containsKey(key) ? activeStatusByTriggerAndMetric.get(key) : false;
      }
docs: Given a metric,notification combination, indicates whether a triggering condition associated with this notification is still in a triggering state.
  
  @param trigger	The Trigger that caused this notification
  @param metric	The metric that caused this notification
  
  @return	True if the triggering condition is still in a triggering state.