@Override
    public void getReplicaIdsByStates(Map<ReplicaState, List<R>> replicasByState, P partition, Set<ReplicaState> states,
        String dcName) {
    }
Test implementation of {@link ClusterManagerQueryHelper} class to return specified {@link ReplicaId}s.
ambry-clustermap/src/test/java/com/github/ambry/clustermap/AmbryPartitionTest.java