@Override
  public List<T> getChildren(String parentPath, List<Stat> stats, int options) {
    return pathToRecords.entrySet()
        .stream()
        .filter(e -> e.getKey().startsWith(parentPath))
        .map(Map.Entry::getValue)
        .collect(Collectors.toList());
  }
{@inheritDoc}

This is not thread safe if some thread is setting {@link #readLatch}.
ambry-clustermap/src/test/java/com/github/ambry/clustermap/MockHelixPropertyStore.java