private void notifyListeners() throws AmbariException {
    long clusterId = topology.getClusterId();
    String clusterName = topology.getAmbariContext().getClusterName(clusterId);
    ambariEventPublisher.publish(new ClusterConfigFinishedEvent(clusterId, clusterName));
  }
Determine if all hosts for the given set of required host groups are known.

@param requiredHostGroups set of required host groups
@return true if all required host groups are resolved
ambari-server/src/main/java/org/apache/ambari/server/topology/tasks/ConfigureClusterTask.java