public DirectoryCache createDirectoryCache(String path, boolean cacheData, boolean dataIsCompressed, ExecutorService executorService) {
        return new PathChildrenCacheWrapper(framework(), path, cacheData, dataIsCompressed, executorService);
    }
Creates a listenable cache which keeps in sync with changes to all the immediate children of a path
zkfacade/src/main/java/com/yahoo/vespa/curator/Curator.java